Humans have always had the capacity for self destruction ever since the Chinese experimented with gunpowder. But we’re still here.
Science nowadays is so heavily regulated by ethical bodies that the idea of going ‘too far’ – a wonderfully subjective concept, is somewhat tempered.
If, however, you are referring to the potential scenario of ‘self annihilation’ then isn’t this the ultimate state of regulation? :D
Mistakes made allow us to decide what is too far. History is a great teacher.
We test, we evaluate and then we re-evaluate.
I’d better stop here. My philosophy meter is showing a 7.5 monads on the Nietzsche-Schopenhauer scale