How can anyone trust any other complex system? Even something as seemingly trivial as a bridge. Picture driving on an unfamiliar road when suddenly there's a br

How can anyone trust any other complex system? Even something as seemingly trivial as a bridge. Picture driving on an unfamiliar road when suddenly there's a bridge ahead. How can anyone in that situation trust that bridge? Without knowing how it was built, whether it is in a state of disrepair, or whether the two sides of the bridge connect without a precipice inbetween[1]. The answer is that we don't need to completely trust a system as long as our experience suggests reasonable safety. Once unassisted Tesla proves to be safer than human drivers, we still won't trust it, but that won't prevent us from using it. [1]: Not relevant to the above comment, but I once encountered such a bridge. It was while driving in the dark, at about 1am and with no traffic, when the navigation in my, iirc, Android 2.1 phone, suggested I cross an unfinished bridge. The only warning sign ahead of the precipice were a couple of traffic cones. The road was familiar, though, and I drove very carefully, curious about the new bridge.