It is either mystery or ignorance. The reduction of quantum states in decoherence or measurement is almost a form of what might be called hard emergence. It is not a subject we know well. I suspect in the case of quantum mechanics this has to do with quantum states that encode quantum bits or states about quantum states, where quantum states are really quantum bits. This is an area not well studied, and in fact in the physics community there is considerable resistance to this idea. The emergence of life might be similar. LC -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.