Think about it like that. If you allow an exception you essentially create many branches with all their negative consequences. With the sticky bit you combine t

Think about it like that. If you allow an exception you essentially create many branches with all their negative consequences. With the sticky bit you combine them to one branch (that is still expensive[1]). [1] https://news.ycombinator.com/item?id=8766417 https://news.ycombinator.com/item?id=8766417