This is science, though, isn't it? There's a mountain of evidence for X, and someone finds a little evidence for Y. No one accepts it, naturally, since there's

This is science, though, isn't it? There's a mountain of evidence for X, and someone finds a little evidence for Y. No one accepts it, naturally, since there's relatively little evidence for it. But over decades, perhaps the evidence grows and Y reaches acceptance parity, and then maybe goes on to exceed X and be the dominant theory. E.g. plate tectonics and continental drift.