Knowledge is generally quantum in nature: there are many possible futures. Thus, Alice might believe Schrodinger's cat is alive, and Bob might believe it is dead. Such genuine disagreement can occur even in a purely deterministic Newtonian world where people have distinct bits of imperfect knowledge -- people can genuinely believe false things and have no way of knowing that they are false. Indeed, in many ways this is the normal state of knowledge, since by the pigeonhole principle no individual can host more than a tiny fraction of the world's data i... (read more)
Knowledge is generally quantum in nature: there are many possible futures. Thus, Alice might believe Schrodinger's cat is alive, and Bob might believe it is dead. Such genuine disagreement can occur even in a purely deterministic Newtonian world where people have distinct bits of imperfect knowledge -- people can genuinely believe false things and have no way of knowing that they are false. Indeed, in many ways this is the normal state of knowledge, since by the pigeonhole principle no individual can host more than a tiny fraction of the world's data i... (read more)