On midsummer’s eve 2016 old people in the UK demonstrated that, by a significant majority, they are xenophobic leeches who are happy to suck the life out of their children and grandchildren, and have now found a way of continuing to do so even after they are dead.

Lots of people, even famous Lisp hackers, like to claim that ‘Python can be seen as a dialect of Lisp with “traditional” syntax’.

Being famous does not make them right.

I sometimes make the mistake of reading the letters pages of newspapers.

I wanted to see if I could write a mildly complicated macro in Racket without becoming too confused. I can, although I am not sure it is terribly idiomatic.

This is the third part of a series on writing macros in Racket for someone used to Common Lisp, although it is mostly independent of the previous parts. The previous parts are part one & part two.

Or: why password strength checkers are useless.

How long might this take, in the worst case?

Three approaches to solving problems on computers.

A model of the planets as black bodies is surprisingly accurate, except in one interesting case¹.

Fog computing is like cloud computing except that no-one can see what you are doing.

Physicists seem still to be taught about tensors as being, essentially, multidimensional arrays with special transformation rules which must be learned by rote. So I wrote a document which tries to present a more useful approach.