This objectivity made science different from the humanities, or from religion—fields where the observer’s point of view was integral, where the observer was inextricably mixed up in the results observed. But in the twentieth century, that difference had vanished. Scientific objectivity was gone, even at the most fundamental levels. Physicists now knew you couldn’t even measure a single subatomic particle without affecting it totally. If you stuck your instruments in to measure a particle’s position, you changed its velocity. If you measured its velocity, you changed its position. That basic
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