> you wouldn't do any nuclear weapons testing unless you wanted to run the risk of killing all humans My first guess would be that the scientists involved woul

> you wouldn't do any nuclear weapons testing unless you wanted to run the risk of killing all humans My first guess would be that the scientists involved would look for creative ways to test while minimizing that risk. test underground or under water (if that would make a difference), test in space (when possible), test smaller yields, etc. Humans go to extreme lengths to create world ending weapons, and we still do it despite this danger. Even if the danger is slightly less acute, we're developing biological weapons and dangerous pathogens that if release accidentally would still have a realistic chance to wipe out humanity.