See, this is why it is always so hard to take these rationalist arguments seriously. They assume their own competence, at the same time as pretending not to.
The most likely alternative is obviously E: something we (personally) don't know. That doesn't depend on time travel, extra dimensions, or aliens.
It's not a clear majority, > 0.5. But to fail to mention it amounts to a big hole in the argument.
The most likely alternative is obviously E: something we (personally) don't know. That doesn't depend on time travel, extra dimensions, or aliens.
It's not a clear majority, > 0.5. But to fail to mention it amounts to a big hole in the argument.