I read a recent thread about clamping forces on this forum, and thought I could sort it easy-peasy – I earned my crust doing that sort of thing. But I kept on going round in circles*. I must be going senile I thought. Well, that's a real possibility so I had a go at the Montreal Cognitive Assessment:

I aced it! I'm clearly a stable genius. How would you do?
Apologies for potentially political content – just seems funny. And a bit tragic.
Robin.
*Im hoping the reason that I went round in circles is that the problem wasn't properly specified – too many unknown constraints!.
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