The only good thing about being ill is that you get to finally catch up with all that stuff you've meant to read. Came across this in last month's Wired. Humour me and play along...
Think of a number.
Divide it by 2.
Subtract the original number.
What's the number you've got? 6? I thought so.
I remember stuff like that from the playground. But it still has the capacity to make me smile. Simple magic and reason tricks, things that delight, equations that equal 'boobless' on calcuators - need to find a place for these in my adult life. But I always thought that 3 was the magic number?