It is often asserted that, in view of the situation in quantum theory, object and subject can no longer be sharply separated. 1 To use Heitler’s words, the ‘separation of the world into an “objective outside reality”, and “us”, the self-conscious onlookers, can no longer be maintained. Object and subject become inseparable from each other’. 2 This, according to Bohr, is due to ‘the impossibility of any sharp separation between the behaviour of atomic objects and the interaction with the measuring instruments which serve to define the conditions under which the phenomena appear’. 3 Heitler elaborates the point in some detail. ‘One may ask’, he writes, ‘if it is sufficient to carry out a measurement by a self-registering apparatus or whether the presence of an observer is required.’ And he arrives at the conclusion that the self-registering apparatus is insufficient, and that ‘the observer appears, as a necessary part of the whole structure, and in his full capacity as a conscious being’. Karl R. Popper
About This Quote

Albert Einstein once said, "The most beautiful thing we can experience is the mysterious. It is the source of all true art and science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed." The quote continues by saying that one of the most beautiful things about life is how unique it is. No two people are exactly alike, nor are two moments exactly alike; each person has their own unique experiences, which make them unique.

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  1. No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.
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  3. Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.
  4. While differing widely in the various little bits we know, in our infinite ignorance we are all equal.
  5. No book can ever be finished. While working on it we learn just enough to find it immature the moment we turn away from it
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