Why is it an all or nothing decision?
Do a small test: if you're 10x faster then keep going. If not, shelve it for a while and maybe try again later
Do a small test: if you're 10x faster then keep going. If not, shelve it for a while and maybe try again later
The case where it's not obvious is when the effect is <1.5x. I think that's clearly where we're at