And maybe no hydrogen bomb.
No, the point was that the atheistic approach was the key contribution, and is still a defining feature. Theists can do science, but they make the atheistic assumption when they do it. And that assumption was hard won - it had to be fought for. The ruling theists didn't like it at all. They killed people to curb it.
The ones that answer to reason are better recommended to others, though.
Right?
I don't recall any thiests making the atheos assumption of belief in godlessness to do science.