People are good with chances up until let's say 1/100, anything lower is filed into - it will never happen in their minds. this is usually called normalization

People are good with chances up until let's say 1/100, anything lower is filed into - it will never happen in their minds. this is usually called normalization of deviance. To make things even worse - if you see someone doing something dangerous and that person knows what he is doing - you may decide to imitate without having the experience or knowledge to see the hidden safety measures that are being taken or the force majeure circumstances that made him do it. Now let's assume that you have to walk a lot into the gigafactories - not at all a small buildings. You are not employee trained or authorized to be near the hot metal, but taking some obscure path saves you 300 meters. You take it, nothing bad happens. It becomes part of your routine - until one day you slip. Not saying that this happened - just an example how people could easily put themselves into danger without realizing the magnitude of it. And throw in the mix that Tesla themselves are not paragons of do things safe, but do it fast as a corporate culture - and it trickles down to the employees.