Humble Pi – by Matt Parker

26 12 2025

Subtitled, “A Comedy of Maths Errors”, this book takes you through common mistakes that have had huge impacts, but written in a light way that is easy and accessible to read.

From rounding errors to random numbers, from bridge building to medical treatment, all sorts of things are covered. It was so interesting!

Because it was a borrowed book (OK, I gave it to my Dad last Christmas, then borrowed it once he’d read it!), I didn’t turn down page corners, but still tried to make a note of some bits that were interesting or entertaining:

  • “Our human brains are simply not wired to be good at mathematics out of the box. […] All humans are stupid when it comes to learning formal mathematics.”
  • “A political committee is rarely a good solution to a mathematical problem.”
  • “If you’re reading this before Wednesday, 18 May 2033 it is still coming up on 2 billion seconds [since 1 January 1970]. What a party that will be.”
  • “We make things beyond what we understand, and we always have done. Steam engines worked before we had a theory of thermodynamics; vaccines were developed before we knew how the immune system works; aircraft continue to fly to this day, despite the many gaps in our understanding of aerodynamics.”
  • “Just because something walks like a number and quacks like a number does not mean it is a number. […] If you’re not sure if something is a number or not, my test is to imagine asking someone for half of it. If you asked for half the height of someone 180cm tall, they would say 90cm. Height is a number. Ask for half of someone’s phone number, and they will give you the first half of the digits. If the response is not to divide it but rather to split it, its’ not a number.”
  • “Age is systematically rounded down in many countries, a human age is zero for the first year of their life and increments to being one year old only after they have finished that whole period of their life. […] Which means that when you are thirty-nine you are not in your thirty-ninth year of life but your fortieth. If you count the day of your birth as a birthday (which is hard to argue against), then when you turn thirty-nine it is actually your fortieth birthday. True as that may be, in my experience, people don’t like it written in their birthday card.”
  • “There is nothing you can do to increase your chances of winning the lottery other than buy more tickets. Wait – I should specify: buy more tickets with different numbers.”
  • “In 2017 two researchers in Canada produced twelve sets of data which all had the same averages and standard deviations as a picture of a dinosaur. The ‘Datasaurus’.”
  • “You can still buy books of random numbers online. If you have not done so before, you must read the online reviews of books of random numbers. You’d think people would not have much to say about lists of random digits, but this vacuum brings out the creativity in people.”
  • “When I was a high-school maths teacher one of my favourite pieces of homework to set was to ask students to spend their evening flipping a coin one hundred times and recording the results. […] I could then take those lists and, by the end of the lesson, I had split them into two piles: those who actually did the homework […] and those who could not be bothered and just wrote out a long list of heads and tails off the top of their head.”
  • “We all make mistakes. Relentlessly. And that is nothing to be feared. […] Mathematicians aren’t people who find maths easy; they’re people who enjoy how hard it is.”




Internet highlights – w/c 14th December 2025

20 12 2025
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Internet highlights – f/c 30th November 2025

13 12 2025
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Friday Five Favourite – Christmas Adverts 2025 – the runners up

12 12 2025

After last week’s top five, here are five more that were great but just didn’t quite make the cut!

Dog’s Trust

Marks & Spencers Food

ShelterBox

Smyths Toys

Morrisons





Friday Five Favourite – Christmas Adverts 2025

5 12 2025

It’s been a strong year, probably enough to do my runners up post in a week too! But also, a shout out to this Uber Eats advert, I’m not including it because I don’t think technically it’s a Christmas advert (it came out in September), but still worth a mention a) cos it’s excellent and b) because of its links to Christmas.

Waitrose
There’s been one advert that when it came out I sent to a load of people because of how good it was – and they were my winner by a long way last year too!

Aldi
After a decade, the Kevin the Carrot adverts don’t feel tired at all! This year’s came in three parts…

Google Pixel

Barbour
It would be hard for Wallace and Gromit to do a bad advert…

Tesco
They have a selection of adverts on a theme this year, so below should be the full playlist if I’ve done it correctly – but even if I haven’t, the opening video is a quick montage of them all!





Internet highlights – w/c 23rd November 2025

29 11 2025
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Internet highlights – w/c 16th November 2025

22 11 2025
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A Woman’s Place is in the Kitchen – by Sally Abé

20 11 2025

I’ve been a Great British Menu fan for years, and Sally has been a contestant on it a three times now. A friend who also watches the show got me her book for my birthday, and I’ve really enjoyed it.

You always hear that professional kitchens are very male heavy environments, but this book really painted a picture of what it’s like to be in one.

The book starts with her aged around 18 and with zero interest in food, going through to a hospitality degree, doing her placement at the Savoy, transferring to Claridge’s when the Savoy closes for refurbishment, and working her way up through various kitchens until she’s running her own. She’s good at explaining most things, to the point of too much repetition occasionally, but it means you nearly never feel alienated. There’s the occasional French term used but I just looked them up, and it’s not often!

There were a couple of times she made comments that did make me feel a bit lesser, for example “I considered dinner at Pizza Express an upmarket night out” – er, yup I still do! She also refers a couple of times to things that make her now smile at her naivety, but they are things that most readers would have no clue about, having not worked in a professional kitchen. A comment about “the most demanding customers – the ones who don’t dine out unless it’s a ‘special occasion'” also grated a bit…
This all said, they were few and far between, and as I said, most things she explained excellently.

I loved reading about how she wanted to run her kitchen as a place where people are just treated better.
– Where you don’t feel terrified of being told off for doing something wrong, but instead where someone else would step in and help.
– Where people don’t work 16 hour shifts (the idea that people do 16 hour shifts blew my mind!).
– Where some shifts are adjusted so that people who need to do the school run can still work in a kitchen.
– Where no one is allowed in the kitchen before the start time, where in her earlier roles, if you were less than an hour early, you were considered late!
– Where people help each other carry large pots instead of watching them struggle.
– Where someone can reduce their hours when pregnant rather than have to give up work entirely.
In short, where it’s not a “badge of honour” to have a horrendous work-life balance. Her aims are really fantastic, and she’s achieving them.

A lot of the book is sharing the experiences she had that led to her wanting to make these changes, so you hear some truly awful things, but more than anything I just found it interesting to read, to learn about a way of life SO different from mine!

Great British Menu only got the briefest of glancing mentions, which was a shame. Not that she was negative about it, she spoke of the business it brought (or would have brought, had it not been for Covid) to her restaurant. To be honest, very little of her life outside of kitchens was covered at all (maybe because so much of her life was IN kitchens!) so I guess maybe she deemed it outside the focus of the book.

She did however cover Covid, and what it was like for those working in hospitality – you can still hear a lot of bitterness in her voice about the decisions the government made, particularly early on, advising people not to eat in restaurants, but doing nothing to support those working in them, and later when things reopened, making them close at 10pm.

Definitely worth a read if you want to learn what it’s really like in the kitchens that make your (or at least, fancy people’s) food. And really encouraging in regards to how things are changing for the better in some kitchens, albeit still with a long way to go overall.





Internet highlights – w/c 9th November 2025

15 11 2025
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Internet highlights – w/c 2nd November 2025

8 11 2025
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