You'd be surprised… also he's talking about the witness testimonies, which aren't hard evidence, but if enough people testify the same thing without being able to speak to each other about what they've said, it's an indication that they aren't making things up on the spot. That said, I have no idea why this matters anymore when the man committed perjury, over minor easily verifiable lies. In a system that actually cared about rule of law and actually having good justices instead of forcing a partisan judge through in order to cover their own asses, this would have already been grounds to throw his nomination out. And yet, here we are.