Yes, the claim that the scientists' hacked-together code is well tested and even uses valgrind gave me pause. It's more likely there are no tests at all. They m

Yes, the claim that the scientists' hacked-together code is well tested and even uses valgrind gave me pause. It's more likely there are no tests at all. They made a change, they saw that a linear graph became exponential, and they went bug hunting. But there's no way they have spotted every regression caused by every change.