Ok. I get what you mean. I didn't actually think about the fact that this explanation is basically the answer to the kata and other people would be able to read it too. I just went from the angle that he apparently solved it already and didn't really understand why the solution works. Just in that case it strikes me as rude to not give him an answer and instead refer him (not even to a specific website but) to a term that he'd have to look up himself. There is a reason why on SO the top voted answer never is 'Go look up "List Concatenation in for loops". Because it is not a good answer.

I don't mean to make any enemies here. It just struck me as pretty rude when I saw it. Thanks for the spoiler flag, I guess that was necessary. Take care

1. No I didn't. I pushed him in the right direction instead.
2. Spoiler flag... x/