"Always remember to close all parentheses. We're not paying to air condition the entire paragraph."

ROFL! Oh, thanks for that re-tweet, that's made my day. Unclosed parentheses are one of my bugbears (especially when I do them!).

(I also tend to read the word as "parent heses" -- the ones the other way round are obviously the "parent sheses". And they nest, producing lots of baby heses and sheses, which then also nest to produce something only a Lisp or emacs programmer can decipher...)