alt Hacker NewsI agree.
It reminds me of the math "puzzles" on Twitter which go:
1 shoe + 1 shoe = 2
2 shoes + 2 shoes = 4
3 shoes + 2 shoes = ???
And the answer isn't 5 because a) we're not counting shoes and b) the shoe laces were different colors. There's nothing clever, it just teaches you to be hyper cynical and question every little detail which isn't relevant to either Math or the real world.
I have a little monograph written many decades ago on Dimensional Analysis. Since reading it, not quite so many decades ago, I simply dismiss puzzles of this sort because the two sides of the equations are dimensionally incongruent. This means that I have to try to guess the state of mind of the questioner rather than solve a logic problem.
It's a handy stance because I'm no good at either solving logic problems or getting inside other people's heads!
Another on that really irritates me is the kind that presents a series of integers and asks which integer comes next. Any integer will do, you just have to fit the appropriate polynomial.