The final part of block D in MS221 of my OU Maths degree is all about mathematical proofs and deduction, which I find absolutely fascinating. A big part of this block was clarity on some logical fallacies that we encounter all the time and that many people use to trick us into agreeing with their arguments.
XKCD: Correlation
With one week to go until the General Election in the UK it seems like a good time to revisit logic and proof from both the political and mathematical sides.