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Just had a real 'my hovercraft is full of eels' moment: Mrs L-P asked me "can you take the electric toothbrush to the undertaker and say it's for the tombola?"

to comply with GDPR, as of May 25th, I will no longer be remembering anybody’s name, face or personal details without their explicit consent

...phew, finally a viable excuse

dear people who make product pages, please describe what your product is on the product page instead of making people infer what it is from the features section

it's come to my attention that some new calculators show recurring decimals with a dot above the recurring digit, instead of showing as many digits as possible. Is that true? Any idea what model of calculator does that?

I feel like LibreOffice, the GIMP, and to a lesser extent Inkscape have the same UI problems as MS Office 2003 - lots of functionality that no one can find. This is how Microsoft got out of that mess: #UX

for a,b in a group G: if ab != ba then aba != e , equivalently the proof that aba = e implies ab = ba. @ColinTheMathmo Thought you would appreciate

Back in 2016, the @aperiodical analysed the maths of 's scoring system:
(warning: contains the hopelessly optimistic assumption that Australia wouldn't become a permanent contestant)

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Eurovision info Show more

A website that's just on the right side of aggressively pedantic about changelogs, for developers of open source software:


Friend to friend: When you make a release please take a few minutes to make a human-readable changelog of what has changed since the last release?

Your commit-messages are not a changelog.

Let me re-iterate:

Your commit-messages are _not_ a changelog.

A changelog allows me to follow what you were thinking between releases.

A commit log shows me your keystrokes between releases.

I need to know what you were thinking.

Thank you.

France's entry is so forgettable I forgot I even had it playing

Recently I discovered a surprising fact about numbers, so I made an online web thing to give it the recognition it deserves. Give it a go:
A little write-up on @aperiodical at

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A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.

Use \( and \) for inline LaTeX, and \[ and \] for display mode.