Birding and wording

TL:DR – An answer to the question why are so many science writers also birders?


Someone on social media asked me as a science writer why so many science writers are also birders. My initial thoughts were as follows: Well, to be a science writer, I think you have to be curious, analytical, interested in lots of stuff…a polymath. Birds are interesting, identification requires analysis, writing about them is fun and if you’re a togger [birder-photographer], you always have a decent photo to illustrate your article.

Wind-blown Short-eared Owl perched on a fence post
Short-eared Owl

One possible explanation for the prevalence of birding among science writers is the concept of “flow.” Flow is a state of deep engagement and enjoyment that occurs when a person is fully absorbed in an activity that is challenging but also within their skill level. Birding can be a highly immersive activity that requires focus, attention to detail, and knowledge of ecology and behaviour. Science writing also demands a similar level of engagement and attention to detail. Thus, individuals who enjoy birding may be drawn to science writing because it provides a similar experience of flow. [In my case, I’d say it was the reverse, I was drawn to birding, because I had a scientific mind and was a science writer and wanted an additional creative outlet].

A flock of 80 or so Avocet
A flock of 80 or so Avocet

Another possible explanation is that birding can serve as a form of “nature therapy” that provides mental health benefits. Research has shown that spending time in nature can reduce stress, improve mood, and increase creativity. Science writing can be a demanding and intellectually stimulating profession, and birding may provide a healthy balance by allowing individuals to connect with nature and recharge their mental batteries.

Red Kite flying against a blue sky
Red Kite

Finally, it’s possible that there is simply a correlation between the personality traits that make someone a good science writer and those that make someone interested in birding. For example, curiosity, attention to detail, and a broad range of interests are all traits that are valued in both professions. Additionally, both birding and science writing are activities that can be pursued alone or in groups, providing opportunities for social interaction and a sense of belonging. [I definitely think of myself as a wannabe polymath, hence my “songs, snaps, science” motif].

Overall, while there is no definitive answer to why so many science writers are also birders, it’s likely that a combination of these factors plays a role. Regardless of the reason, it’s clear that the intersection of birding and science writing provides a rich and fascinating field of exploration.

Knots landing again

TL:DR – Tens of thousands of Knot murmurate over The Wash visible from the north Norfolk and Lincolnshire coasts.


We spent the night in North Norfolk, tried to have an early night at a cheap hotel, and were up well before dawn to get to Knots Landing (RSPB Snettisham). We hoped to be in plenty of time for the high tide and the potential for a Wader Spectacular. We, and dozens of other green-clad, enthusiasts were not disappointed.

Knot at dawn
Knot at dawn, RSPB Snettisham, Norfolk

The weather was damp and drizzly and very cold and we got soaked through, but we witnessed tens of thousands of Knot (Calidris canutus) murmurating over the advancing tide as we headed for the landing site.

Most have at this point already been pushed off the deluged mudflats of The Wash, their low-tide feeding grounds, and into the air. Within minutes, the murmurs flood the banks of the inland lagoons with birds crammed tightly together to ride out the high tide. They wait patiently for a distant trigger that calls them once the ebbing tide retreats along the muddy shoreline.

Flocking Knot looking like a live Escher etching
Flocking Knot looking like a live Escher etching

As the tide turns, they flock back to sea, murmurating along the way – strength in numbers – to confuse any preying Peregrines. Ultimately, the seem lost to the waves but are merely gone from view.

Murmurating Knot
Murmurating Knot

This is not the first time we’ve seen the Knot murmurations, although it is the first time we’ve made a special trip to catch them at a dawn high tide. We visit the area often and have seen these wondrous flocks on numerous occasions and caught one wader spectacular just as the sun was setting a few years ago. Always amazing to watch the sun set over the sea when one is ostensibly on England’s east coast. You’ll have to look at the map for Snettisham, Norfolk to see how that can be. (Video from 2018 visit here).

Knot crammed together to find refuge on the banks of the lagoon at Snettisham to escape the high tide
Knot crammed together find refuge on the banks of the lagoon at Snettisham to escape the high tide

The bird’s name comes from the name of the King who demonstrated his fallibility to his subjects by failing to turn back the tide – King Cnut – better known to us Brits as King Canute. The bird’s scientific name is Calidris canutus. Kalidris, or skalidris, was a word used by Aristotle to describe various grey-coloured shore birds, waders. The (Red) Knot, C. canutus, is the “type species” of the genus, although unusually does not have a tautonym (it would have been Calidris calidris).

Knot heading back out to sea with a few Godwits along for the ride
Knot heading back out to sea with a few Godwits along for the ride

Meanwhile, on the same trip taking in a visit to nearby RSPB Titchwell we also clocked Avocet, Bar-tailed Godwit, Black-headed Gull, Black-tailed Godwit, Brent Geese, Chaffinch, Common Gull, Cormorant, Curlew, Dunlin, Gadwall, Golden Plover, Goldfinch, Great Black-backed Gull, Grey Plover, Greylag Geese, Herring Gull, Lapwing, Linnet, Mallard, Marsh Harrier, Meadow Pipit, Mediterranean Gull, Mute Swan, Peregrine Falcon, Pintail, Redshank, Red Kite, Reed Bunting, Robin, Sanderling, Shelduck, Shoveller Duck, Skylark, Snipe, Spoonbill, Teal, Turnstone, Water Pipit, Wigeon, Wren, and others.

One of a couple of Snipe feeding at RSPB Titchwell
One of a couple of Snipe feeding at RSPB Titchwell

Dual antidote for cyanide and carbon monoxide poisoning

TL:DR – Scientists have developed a life-saving antidote for exposure to the deadly gases hydrogen cyanide and carbon monoxide.


Scientists have made a groundbreaking discovery in the field of antidote development by creating a synthetic heme-model compound that has the potential to save lives in the event of simultaneous poisoning by carbon monoxide and hydrogen cyanide, which are frequently encountered in building fires. The compound, which has been tested on mice, resulted in an impressive 85% survival rate and rapid recovery. The chemical group known as heme is at the heart of hemoglobin, the oxygen-carrying molecule in our blood, and various enzymes in our body.

The researchers, led by Qiyue Mao of Doshisha University in Kyotanabe, Kyoto, Japan, and her colleagues, have published their findings in the scientific paper “A synthetic porphyrin as an effective dual antidote against carbon monoxide and cyanide poisoning.” The study shows that the antidote is highly effective and exhibits low toxicity. Moreover, the compound can be rapidly eliminated from the body through urinary excretion, making it an ideal antidote for emergency situations.

The fact that the synthetic heme-model compound is storable at room temperature is a significant advantage for emergency services, as it could be rapidly prepared and administered at the site of accidental exposure to fire-generated gases. The potential benefits of this discovery could be life-saving, and it represents a significant leap forward in the field of antidote development.

The compound was developed using porphyrin, a molecule that is known to bind to oxygen-carrying heme proteins in red blood cells. The synthetic heme-model compound mimics the structure of natural heme and binds to carbon monoxide and cyanide, preventing them from binding to the body’s own heme proteins. This mechanism of action makes the compound highly effective in treating poisoning by these deadly gases.

The findings of this study have significant implications for public health and emergency services. By providing a safe, effective, and easy-to-administer antidote, lives could be saved in emergency situations where carbon monoxide and hydrogen cyanide poisoning are a risk. The potential for this compound to be used in human patients is exciting and offers hope for those at risk of exposure to fire-generated gases.

Mao, Q. et al. Proc Natl Acad Sci, Feb 20, 2023


As an experiment, I used ChatGPT to edit the press release about this work from PNAS. The only changes I made were to add the sentence in italics at the end of the first paragraph, add the institution, and to change team to colleagues.

Does a rainbow cast a shadow?

TL:DR – No, rainbows do not cast a shadow.


A rainbow is an optical phenomenon. They are seen when light is refracted and reflected by water droplets in the atmosphere. They do not exist as physical objects in the same way that a solid object would and so do not block the path of light from the sun or any other light source so do not cast a shadow. You only see a rainbow when the light source is behind you and you are looking at the region in the atmosphere where the water droplets are present.

Do this if you want your photos to really take flight

TL:DR – Tips on choosing which photo to process how to denoise and sharpen software, adjust levels, and crop.


Recently, I wrote about the beautiful Short-eared Owls that turned up on our patch over-winter in the slightly warmer climes of the Cambridgeshire Fens. I got photos of three hunting in the hour before dusk. The photos were okay, but I knew I could make them better with a few simple tools.

UPDATE: The SEOs are back. At least six of them on the fen. I got a few more shots late November 2023 including this one of a grumpy-looking Shortie that had just missed catching a vole.

Short-eared Owl hunting over the fen
Short-eared Owl hunting (unsuccessfully at this point) over the fen

The problem is always hand-holding a big lens when the light’s fading. There’s camera shake and a short shutter speed is also needed to freeze the action. This adds up to the camera switching up the sensitivity, the ISO, and that makes for more photographic noise.

So, what can you do to improve a noisy photo that might also have a bit of motion blur. First off, you must make sure you’re shooting in RAW mode. RAW mode lets you download what is essentially an unprocessed digital negative of the photo you took.

I’ll run you through what I do with the RAW files out of my camera. First, I select from the photos the one I think is the most dramatic or has the most character, the best light, the sharpest. I also try to pick one that doesn’t have distractions like foreground twigs or foliage or a cluttered background. Often your choices are limited with bird flight photography as the birds appear on their own terms and where you happen to be standing at the time determines a lot of that. A slight movement left or right might help sometimes in terms of foreground and background.

So, I’d picked this photo as the best of one of the owls flying in front of me. It was fairly close. Background isn’t too bad. The blurred building in the background almost adds to the composition although might have been more appropriate if it were a Barn Owl. That stem in the bottom left is a distraction and could do with being removed. We’ll see.

The original photo was shot at 600mm zoom, 1/3200s shutter speed, f/6.3 aperture and ISO 6400. That ISO number is way too high and I might’ve got a similar result if I’d used a slower shutter speed to get the ISO down a few stops.

I resized the photo to fit the website, but other than that with this first view it’s not cropped nor processed or edited other than a basic RAW to JPG conversion to make it displayable and to add my logo. The website loads the image as 1024 pixels wide with a JPEG compression of about 90%. It’s quite noisy, not as sharp as it could be, the levels (contrast, brightness, saturation etc are not optimised). And, in terms of composition, it’s not how I’d want the final photo to look.

TOP TIP: Push the sliders on whatever adjustment you’re making to the point where it is immediately obvious that you’ve made an adjustment and then claw them back ever so slightly. This way you will hopefully avoid making the photo too painterly. If you’re having to push anything beyond about 12% of the way up, then it might be worth abandoning the photo, unless you’re after a painterly effect.

So, stepping back I first feed the RAW file to DxO PureRaw. This removes a lot of the noise from any photograph really well. It also applies basic corrections that are known to be needed for the specific camera and lens setup used. I’ve zoomed in on the program in action so you can see, on the left just how noisy the photo was originally, and in the right of the frame, how well the noise reduction works.

The frame below is that same image saved in DxO PureRaw. Hopefully, you can already see some improvement from the original RAW capture above and displayed at the same composition. PureRaw lets you export as a DNG file, which is like a generic RAW format so you can do the subsequent processing as if the file were fresh from your camera.

At this point, I generally make an important choice. I can either simply open the denoised image from DxO in my photo-editor (PaintShop Pro) or add another step and open it in Topaz Sharpen AI. This software does denoising too but it can also sharpen and remove motion blur. Either way, at this point, I would first crop the image to give me the composition I would like in the final image and perhaps mirror the image so that the subject is facing in a more pleasing direction (flying left to right is better to my eye than having the bird fly off to the left.

The following photo is cropped and reversed to give me the composition I am after. I’d usually do a square crop for Instagram.

I am quite happy that this image is fairly sharp and so I won’t apply Topaz in this instance. Instead, I will use PSP to adjust various parameters: Overall brightness (raised 14%), shadows (up 10%), and highlights (no change). Saturation up 8%, Focus/sharpening up 66%. I’ve left the white balance as it was. I then brought in the blacks by 6% and the whites by 4%.

I then raised the vibrancy, which is an adjustment related to saturation but slightly subtler, I gave that a 12% boost, which I think gives the photo even more of a “golden hour” glow. Also added a few percent of “fill highlight” and boosting “clarity” by about 10%.

That grass stem sticking up from the bottom right is a bit of a distraction, so I removed it using what PSP calls the Scratch Remover tool. PSP also has a tool called Magic Fill which can do a much better job of removing objects from a photo if they’re not simple, thin lines.

Once all that’s done, the final couple of steps are always to apply a moderate “unsharp mask” to make the final image even crisper and then to add my dB/ logo.

So that’s probably as far as I’d take it. To my eye, it looks fine. At the very least, it looks a whole lot better than the RAW original, but that’s to be expected, you don’t expect to look at negatives instead of prints of photos. All photographs have to be developed, they always have been, in the digital age, we have more sophisticated tools to do the job for better or worse.

When looking close up at the originals (pixel peeking), I can see marked improvements with each stage of the above processing and would be confident that cropped closer it would still print nicely in a print magazine, screening at 300 dpi, at up to 6 inches width, but perhaps no bigger in this case.

Just for completeness, I did do a Topaz process on the DxO output and it does reduce the speckles of noise still further. However, there was also a bit more of a loss of detail. The image below was DxO then Topaz and then the same PSP processing as before. I cropped it a bit tighter for what I might use as a photo to accompany an article about this species, or owls in general, showing a bit less of the fenland background.

Instagram-ready version below

DxO and Topaz are the leaders in terms of denoising at the moment, I’d say. I prefer what DxO does though, but Topaz has the sharpening options that DxO PureRaw lacks. I trained on Photoshop but have stuck with PaintShop Pro for editing for many years, PSP has almost all of the same tools as Photoshop for the basic processing I do. Lightroom has advantages and there are, of course, many alternatives out there to all these programs. I must confess that I usually use SnapSeed for photos on my phone and sometimes for a landscapes, architecture, flowers, moths etc. I might do use the above workflow but then open the file on my phone in SnapSeed to bump what that app calls “Ambience” and “Structure” and adjust saturation a little more.

Short-eared Owls on the Fens

TL:DR – Information about and photos of local Short-eared Owls.


I’ve discussed the Short-eared Owl, Asio flammeus, previously. Beautiful bird that occasionally overwinters in the UK, having spent the summer months in Iceland, Russia, or Scandinavia.

We are lucky to see them hunting on the fens sometimes. These photos were taken in the hour before sunset at NT Burwell Fen. There were three shorties hunting.

We usually anticipate their arrival in October, November, but they can sometimes arrive earlier and will stay until early April. There were half a dozen at Burwell a couple of years ago and one of them with damage to its wing (it could still fly) stayed through the summer months.

Shorties will hunt over fens, grasslands, marshes, and other open habitats.  In my experience, the best time to catch sight of them hunting is in the hour before sunset, but others report seeing them at any time during the day when the owls hunt small mammals such as voles, mice, and shrews.

The owl has a distinctive, buoyant, and “floppy” flight style, they usually follow a “flap-flap-glide” flight pattern, and will often perch on fence posts or bushes, looking out for moving prey. They will often perch quite close to birdwatchers and photographers.

Also see on the same trip to Burwell Fen – Peregrine (in flight over the Wicken side), several Common Kestrel, Barn Owl, and Common Buzzard.

Fowl play: old gravelpits as birdwatching hotspots

TL:DR – Gravel pits that have been converted into nature reserves can offer some lovely scenery and the opportunity to see interesting and even rare wildlife.


There are lots of old gravelworks in our area some of which are earmarked as nature reserves as I’ve mentioned before, a couple of times, and some are used as fisheries. Where there’s water and reeds and trees there will most likely be birds regardless of the anglers or visitors.

Great White Egret perched on a half-submerged tree stump
Great White Egret perched on a half-submerged tree stump

On this almost sunny Friday morning, I headed to the fishery lakes adjacent to Meadow Lane, St Ives – known to some as Meadow Lane Pits. I was hoping to see and perhaps get photos of the five Smew, a type of diving duck, that had turned up there earlier in the week. Birders had reported three drakes (males) and two females, known among birders as “redheads” for their obviously different appearance to the males.

A female "redhead" Smew flanked by two drakes
A female “redhead” Smew flanked by two drakes, an additional redhead and another drake were on the water nearby

I parked up and trekked around the muddy footpaths, trouser bottoms tucked unfashionably into my walking socks, to try and catch sight of the Smew. En route I saw (in no particular order) Tufted Duck, Black-headed Gull, Bullfinch, Starling, Blackbird, Gadwall, Little Egret, Goldeneye, Egyptian Goose, Wigeon, Great White Egret, Great Crested Grebe, Lesser Black-backed Gull, Grey Heron, Great Spotted Woodpecker, Coot, Cormorant, and at some point quite early on, one or two of the Smew, and then all five.

Great Crested Grebe in Winter plumage
Great Crested Grebe in Winter plumage

Old gravel pits, particularly those that have been allowed to fill with water, can be nice spots for birdwatching for various reasons. First, there is the potential for habitat diversity. Gravel pits can develop a mix of habitat types, including open water, reedbeds, mudflats, and vegetated areas. This can attract a variety of bird species but it also cultivates large numbers of invertebrates as well as small mammals, amphibia, and fish which can all thrive there if given the chance.

Where old gravelpits have been managed there are often large areas that are not open to the public, so there can be far less disturbance to the wildlife in those areas and along the margins this spills over into the publicly accessible areas. As they mature, these old gravel pits often become tranquil areas of scenic beauty. Many are rather peaceful, hardly see any visitors, have attractive vegetation and in short, the overall combination of habitat diversity, food availability, and lack of disturbance make them excellent spots for a bit of peace and quiet and a spot of birdwatching.

New Year in Norfolk 2023

TL:DR – New Year trip to North Norfolk – diary entry blog post.


As has been our habit for the last few years, we have eschewed the midnight festivities of New Year and escaped to the coast. This time, we straddled the New Year with three nights in a cosy cottage in Wells-next-the-Sea. We enjoyed the local hostelries in the evenings during our trip, but the main focus was to walk as far as we could manage each day (usually 7 or 8 miles) and to take in the birding and other sites of nature en route.

Pallid Harrier in flight over marsh edge at Warham, Norfolk, about 1200 metres from the camera
Record shot: Pallid Harrier in flight

Wells, Warham, Titchwell, and Holkham Gap were the main areas, beach, woodland, marsh, and nature reserve. A couple of Muntjac (one deceased), two or three Grey Squirrel, half a dozen Grey Seal, and 1001 dalmations and others dogs were the limited list of mammals we saw.

Red Kite with fishy prize
Red Kite, Holkham Gap

The birding list was much better as you’d expect, for starters, we saw a rare vagrant over the marsh at Warham east of Wells, a Pallid Harrier, along with a couple of Hen Harriers on the same marsh. It was dull and grey at that point and the low-light photos of the harriers are just my record shots.

Shorelarks in flight, Holkham Gap
Shorelarks in flight, Holkham Gap

The Pallid Harrier, Circus macrourus, is a migrant that breeds in Eastern Europe, Iran, and central Asia, wintering in India or Africa depending on its migratory wont. It is rare in Western Europe and the UK, but occasional vagrants are ticked here. That said, the species is now known to have bred in The Netherlands (2017) and Spain (2019). A changing world means a changing world for the birds too.

We saw dozens of other species (around 80). Many of those we had seen before, some many times, but one was rather special and we’d only seen it once before, in Poole Harbour in the autumn of 2022 – White-tailed Eagle. An immature specimen flew over us as we were heading back along the beach to Holkham Gap from the westward marsh end of the patch. The bird itself was heading to its roost on the marsh where it had been reported at roughly the same time for the previous couple of days. We don’t know at this point whether the bird we saw was one of the two we saw in Poole, these Isle of Wight reintroduction birds do cover a lot of ground on their travels.

Immature White-tailed Eagle
Archive shot: Immature White-tailed Eagle in Poole Harbour

On a smaller scale, but much more numerous, we had some lovely views of visitors from The Arctic, Snow Buntings (30+), which are distant cousins of the Yellowhammers and Reed Buntings. We also saw Shorelarks (about 11) at Holkham Gap despite the best efforts of uncontrolled dog walkers to repeatedly scare the birds away.

Parial flock of 30+ Snow Bunting, Holkham Gap
Flock of Snow Bunting, Holkham Gap

Below is the, hopefully complete, list of birds we saw, we may have a few others that we may have glimpsed in passing but are not claiming for the list, Grey Partridge, Bullfinch, Whooper Swan, Sparrowhawk. There were no feeders at the RSPB Titchwell cafe area on this visit, so no sighting of Coal Tit on this visit.

Grey Plover in flight along the coast at RSPB Titchwell
Grey Plover

Avocet, Black-headed Gull, Bar-tailed Godwit, Black-tailed Godwit, Blackbird, Blue Tit, Brent Goose, Buzzard, Cetti’s Warbler, Chaffinch, Collared Done, Common Scoter, Coot, Cormorant, Curlew, Dunlin, Dunnock, Egyptian Geese, Goldcrest, Golden Plover, Goldeneye (F), Goldfinch, Great Black-backed Gull, Great Crested Grebe, Great Tit, Great White Egret, Grey Heron, Grey Plover, Greylag Goose, Hen Harrier (ringtailed: F or Juv), Herring Gull, House Sparrow, Jackdaw, Jay, Kestrel, Kingfisher, Knot, Lapwing, Lesser Black-backed Gull, Little Egret, Little Grebe, Long-tailed Tit, Magpie, Mallard, Marsh Harrier, Meadow Pipit, Moorhen, Mute Swan, Oystercatcher, Pallid Harrier (NFM 2023), Pheasant, Pink-footed Goose, Pintail, Pochard, Red Kite, Red-breasted Merganser (pair, twice to locations), Red-throated Diver, Redshank, Reed Bunting, Ringed Plover, Robin, Rook, Rough-legged Buzzard, Sanderling, Shelduck, Shore Lark, Shoveller, Skylark, Snow Bunting, Starling, Stock Dove, Stonechat, Teal, Tufted Duck, Turnstone, Water Rail, White-throated Diver, Wigeon, Wood Pigeon, Wren.

Ringtail Hen Harrier in flight at Warham, Norfolk, over the marsh bridge
Record shot: Ringtailed Hen Harrier

I fed this article paragraph by paragraph to an AI chat bot, ChatGPT, and have put together a post showing the call-and-response artificial conversation I had with the bot. I also followed up that article with a bit of discussion about AI and its role in human creativity and innovation. But, and here’s the clever bit, I didn’t provide my own thoughts, I asked the bot a question and it came up with an answer for me.

My natural highlights for 2022

TL:DR – A few natural highlights from a year that’s been rather miserable in too many ways for me, but peppered with music and photography and nature.


You can find the photos I took of these highlights littered around the Sciencebase website, in my Imaging Storm galleries, on my Instagram, Twitter, Mastodon, and Facebook.

Thousands of Pink-footed Geese, North Norfolk

Water Rails – RSPB Lakenheath

Frogs (20+) and frogspawn -in our garden wildlife pond

Cranes – RSPB Ouse Fen

Grasshopper Warbler – RSPB Ouse Fen

Otter on the river bank of the River Great Ouse or is it the Great River Ouse, ouse means river so could be the Great Ouse River too…

White Stork – Earith and Smithy Fen

Chiffchaff – bathing in our garden wildlife pond

Puffins, Shags, Razorbills etc –Farne Islands

Kittiwakes, Eider Ducks – Seahouses

American Black, Arctic and Sandwich Terns – Long Nanny, Northumberland

Hooded Crow – Northumberland

Wall butterfly – Seahouses

Lizard Orchid – Devil’s Dyke

Bee Orchid – WARG Field, Cottenham

Black Hairstreak and White Admiral butterflies – Monk’s Wood and Brampton Wood

Purple Emperor, Purple Hairstreak – Gamlingay Wood and Woodwalton Fen

Grizzled Skipper – Woodwalton Marsh

Chinese Water Deer – RSPB Ouse Fen

Adonis Blue and later Chalkhill Blue butterflies, also Green Hairstreak and Dark Green Fritillaries – Devil’s Dyke, Cambs

Marbled White – Edwards’ Wood, Dry Drayton

Small Blue butterflies – Trumpington Meadows

Brassy Longhorns again – Cottenham Lode

Discovering two previously unreported colonies of White-letter Hairstreak butterflies – Rampton Wood

Discovering a previously unreported colony of Purple Hairstreak butterflies – Rampton Wood

Encountering an irruption of Clouded Yellow butterflies – beyond RSPB Ouse Fen and two other patches of the same species elsewhere

Rosy Footman and Light Crimson Underwing moths – New Forest

New Forest Ponies – New Forest

Huge flock of Common Buzzard in a field on Soham Road

Numerous Convolvulus Hawk-moth – to tobacco plants in our garden

Sighting of Osprey and two White-tailed Eagles – Poole Harbour

Sika Deer, doe and fawn – Wareham

L-album Wainscot moth – Corfe Castle

December Moth at long last – to actinic light in our garden (64th new moth of the year for me.

Just another notch

TL:DR – A thought experiment that could encode the whole of literature in a single notch in a metal rod.


An intriguing thought experiment explains how one might encode the whole of literature in a single fraction, a/b, and how that ratio might be made physical as a notch in a metal rod, whereby the length on the left of the notch is a and that on the right is b.

Screen grab from the video showing a pen drawing a notch with a ratio of a:b

How might that be done? Well, if we assume we’re using just the English alphabet, we could assign each letter a code, 001 for the letter a, 002 for the letter b, 003 for c, and so on. 000 could represent a space. Numbers beyond 026 would be the punctuation marks.

So, all of literature could be written out as a continuous sequence of those three-digit codes. There’d be a lot, obviously, there are billions and billions of letters across the whole history of the written word. But, it would be possible.

Now comes the clever bit. That number is a finite whole number, it doesn’t go on forever. So, if we put a zero followed by a decimal point at the beginning, we would have a decimal fraction. Any decimal fraction of limited length can be represented as a ratio of two whole numbers. They are rational unlike numbers such as pi or e, which are irrational and can never be calculated fully as they go on forever. Thus, we have that fraction, that ratio. All we need to do now is take out metal rod and put a notch in it at the point where that fraction is represented by the distance from one end to the notch over the distance from the other end to the notch.

It’s clever isn’t it? I imagine this idea has been invented several times before, but I think the first time I came across it was in a recent TikTok video here.

Anyway, that’s a theoretical system for encoding the whole of human literature with a single mark on a metal rod. But, would it work in practice? I suspect not. The encoded fraction that gives us the decimal fraction that represents all of literature will be absolutely enormous, many millions of digits in the numerator and the denominator, perhaps more, I cannot quite imagine how long the string of numbers would be…

As such marking a notch with such precision on a metal rod is going to require an incredibly accurate means of measuring marking the rod. I am guessing that with a rod just a metre long, the precision needed will come up against the quantum limit and at that limit it would be impossible to make such a mark because we couldn’t move the marker accurately and know precisely where it is on the rode. We might try a longer rod, but I suspect it would need to be incredibly long, perhaps even millions of kilometres, perhaps lightyears long to allow a notch to be made and at astronomical scales relativistic effects will come into play.

Then, there are the issues of fabricating a uniform and chemically pure rod that is stable, resists oxidation and degradation, that would theoretically be impossible too. On top of that we must take into account expansion and contraction that would take place with a rise and fall in temperature and the resulting distortions to the rod and the notch that might occur with such fluctuations.

It’s not looking good for encoding the whole of literature in this way. Perhaps we could start with a short children’s book as a preliminary test and see how well we could do that. Seeing as we seem to have gone done a weird rabbit hole, perhaps we could start with Alice’s Adventures in Wonderland.

There is a twist in the tale though. You remember I mentioned how the irrational number pi cannot be represented by a fraction because it goes on forever, well a big chunk of pi could be sliced out of the irrational number and used to generate a ratio. If we searched pi for long enough we would actually find a slice that represented the a/b we were looking to represent all of literature in a single ratio.

Moreoever, because pi goes on forever, the whole of literature is encoded somewhere in pi already and it is repeated an infinite number of times. And, double moreover, the whole of the future of literature, all those books yet to be written are encoded somewhere in pi, but you have to find the right chunk to work on! In fact, somewhere in the eternity of pi all information that has existed and might one day exist is encoded in pi. At some point within the random digits of pi, we might even take out slice to explain life, the universe, and everything…imagine the meaning of life in pi, and it is not just 42.