QUOTE : Everett thought that measurement, as presented in von Neumann’s textbook, was “a ‘magic’ process in which something quite drastic [occurs] (collapse of the wave function), while in all other times systems [are] assumed to obey perfectly natural continuous laws.” Measurement shouldn’t be fundamentally different from other physical processes. And even worse, according to Everett, von Neumann’s approach doesn’t even tell you what measurements are. If a measurement only happens when someone looks at a system, who, in particular, has to look? Everett argued that this line of reasoning leads inevitably to solipsism—the idea that you are the only being in the universe, and everyone else is somehow illusory or secondary, existing in states of indeterminate reality until you, the High Arbiter of Wave Function Collapse, deign to observe them. In his thesis, Everett admitted that this is an internally consistent view, but that “one must feel uneasy when, for example, writing textbooks on quantum mechanics, describing [wave function collapse], for the consumption of other persons to whom it does not apply.