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relativity  QUOTES

4 " One of my principal theses is that in every case the nature of a being (contingent as well as essential nature) can, in principle, be immanent to and truly inherent in knowledge and reflexive consciousness as it is outside of consciousness, and therefore not only as it is represented by some image, perception, idea [*Vorstellung*], or thought. This immanence of the nature of a being to consciousness occurs, of course, with totally different degrees of adequation and on completely different levels of the relativity of its existence to the existence and constitution [*Organisation*] of the " knowing" subject. Existence, however, can never be immanent to consciousness. Rather, existence necessarily transcends knowledge and consciousness and is alien to them. Existence is essentially transcendent and remains independent of them, even in the limiting case of a " divine," omniscient Mind." In other words, the nature and the existence of any possible object are separable with respect to the possibility of their being *in mente* [in the mind]. The nature of a being can be *in mente* and actually is so in any evidential cognition of what a thing is, which excludes cases of illusion and error. Existence can never be *in mente*. I shall speak later of how existence can be " given" despite this. Existence transcends thought, intuition, and perception, as well as any cooperation of thought and intuition in that higher form of knowledge we call cognition. Cognition is the " knowledge of something as something," the coincidence [*Deckung*] of intuition and thought." from_Idealism and Realism_ "

7 " ...We now know the basic rules governing the universe, together with the gravitational interrelationships of its gross components, as shown in the theory of relativity worked out between 1905 and 1916. We also know the basic rules governing the subatomic particles and their interrelationships, since these are very neatly described by the quantum theory worked out between 1900 and 1930. What's more, we have found that the galaxies and clusters of galaxies are the basic units of the physical universe, as discovered between 1920 and 1930....The young specialist in English Lit, having quoted me, went on to lecture me severely on the fact that in every century people have thought they understood the universe at last, and in every century they were proved to be wrong. It follows that the one thing we can say about our modern 'knowledge' is that it is wrong...My answer to him was, when people thought the Earth was flat, they were wrong. When people thought the Earth was spherical they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together.The basic trouble, you see, is that people think that 'right' and 'wrong' are absolute; that everything that isn't perfectly and completely right is totally and equally wrong.However, I don't think that's so. It seems to me that right and wrong are fuzzy concepts, and I will devote this essay to an explanation of why I think so.When my friend the English literature expert tells me that in every century scientists think they have worked out the universe and are always wrong, what I want to know is how wrong are they? Are they always wrong to the same degree? "

17 " Evolution endowed us with intuition only for those aspects of physics that had survival value for our distant ancestors, such as the parabolic orbits of flying rocks (explaining our penchant for baseball). A cavewoman thinking too hard about what matter is ultimately made of might fail to notice the tiger sneaking up behind and get cleaned right out of the gene pool. Darwin’s theory thus makes the testable prediction that whenever we use technology to glimpse reality beyond the human scale, our evolved intuition should break down. We’ve repeatedly tested this prediction, and the results overwhelmingly support Darwin. At high speeds, Einstein realized that time slows down, and curmudgeons on the Swedish Nobel committee found this so weird that they refused to give him the Nobel Prize for his relativity theory. At low temperatures, liquid helium can flow upward. At high temperatures, colliding particles change identity; to me, an electron colliding with a positron and turning into a Z-boson feels about as intuitive as two colliding cars turning into a cruise ship. On microscopic scales, particles schizophrenically appear in two places at once, leading to the quantum conundrums mentioned above. On astronomically large scales… weirdness strikes again: if you intuitively understand all aspects of black holes [then you] should immediately put down this book and publish your findings before someone scoops you on the Nobel Prize for quantum gravity… [also,] the leading theory for what happened [in the early universe] suggests that space isn’t merely really really big, but actually infinite, containing infinitely many exact copies of you, and even more near-copies living out every possible variant of your life in two different types of parallel universes. "

Max Tegmark , Our Mathematical Universe: My Quest for the Ultimate Nature of Reality