This year’s festive offering considers countable and non-countable infinities and follows (very) loosely from last year’s discussion of deterministic and non-determininstic optimisation

[Specially for Alex Irvine, who is either having trouble getting his head around infinite sets or still believes in Santa Claus: we’re not allowed to say which]

Father Christmas has a problem. The Intergalactic Department of Work and Pensions (IDWP) has threatened to cut his tax credits because he apparently only works one day a year. He’s tried to point out that he’s the head of a vast multinational organisation of elves and reindeer, who themselves work all year round, but that doesn’t wash with the IDWP boss, Ian ‘Dunkin’ Smiff, because his dad didn’t go to public school.

So, he’s been given extra work to do: a lot of extra work to do …

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