You're right about the experiments, but you underestimate how many orders of magnitude you are away from a cat. Not only is there the orders of magnitude in ter

You're right about the experiments, but you underestimate how many orders of magnitude you are away from a cat. Not only is there the orders of magnitude in terms of atomic size, you also have to consider the orders of magnitude of time as well, since the thought experiment implicitly takes place at human time scales, where we are presumably waiting at least a couple of seconds to open the box. Adding them both together probably puts us a good 15-20 orders of magnitude away from a cat. It is difficult to imagine what box could isolate something that large that thoroughly for that period of time; it gets multiplicatively harder as you add those constraints, if not exponentially (depending on the circumstances), not merely additively.