>More than zero is too many. I don’t think this is the correct way to look at it. That may seem harsh but humans certainly never have nor ever will think that

>More than zero is too many. I don’t think this is the correct way to look at it. That may seem harsh but humans certainly never have nor ever will think that way. For example, what is the risk of death associated with climbing up the tree to get the apple. How much are people willing to pay to buy a safer car? There will always be a tail risk. Mitigating the risk will eventually not be worth the cost, either it terms of resources or human years spent on reducing the risk. A much more recent salient example is that most societies on earth have decided that the risk from dying from COVID is worth it to continue living a normal life. If we applied your standard, we should never leave our house and do anything constituting a normal life.