Correct predictions of the future, whether by tarot or other means, would have the profoundest consequences for philosophy, ethics, and physics. For the future to be predicted correctly, it would have either to already exist in some sense or to exist as a potential implicit in the positions and momenta of every particle in the universe. In that second case, the universe would be a kind of machine that grinds out the inevitable future according to the immutable, deterministic laws of Isaac Newton. Regarding the first alternative, it's hard to say exactly what an "already existing future" would mean. If it means anything, it certainly would be incompatible with free will since all that will ever exist already exists. The second alternative is equally incompatible with free will since a deterministic universe, by definition, does not allow for alternative possibilities that free will assumes. This picture is complicated by quantum theory (the most precise theory ever developed) which tells us that the universe is not deterministic because particles are continuously popping in and out of existence according to laws of statistical probability, and no particle even has an exact momentum and an exact position until it is measured. Therefore, tarot and other occult arts that claim to predict the future are actually refutations of quantum theory. This is hard to accept since much of the modern world is based on quantum theory--computers, lasers, particle physics, astronomy, etc.