Replied to pedanterrific.

In response to that reply I note that I gave two examples of mechanisms by which a species might launch nuclear weapons without any ability to use tools. I could come up with more if necessary and a more intelligent (or merely different) mind could create further workarounds still. But that doesn't preclude acknowledging that the capability to use tools does give significant evidence about whether the species creates technology - particularly in what amount to our genetic kin.

Lack of fossilized evidence of technological artifacts is not the only reason to believe that the extinction of dinosours wasn't due to nuclear war. It is merely one of the stronger reasons.