3 ms·

Both theories are assuming that the parameters are tunable. Why would we assume that?

• layer8 4y ago
  The parameters are “tunable” because we know of nothing that would prevent the parameters from having a different value. The particular values they have aren’t a logical consequence of other known facts, and hence appear to be arbitrary. They are tunable in the sense that if they were different, no logical contradiction would arise. There is nothing that compels them to have the particular values we observe them to have. This means we have no explanation of why they have those values. But one goal of science is to provide explanations of why the world is how it is. If we can somehow reduce the apparent arbitrariness of a parameter, or remove it completely (by having it be a mere logical consequence of something else we know), then that increases what we can explain about the universe.