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I Disagree.

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Posted by Michael Wright on December 14, 2001 20:36:33 UTC

I do know something about black holes. I know that they exist. I know that to know something is to regard it as true beyond doubt.

I know black holes exist by inference. I have concluded from evidence and premises that black holes do exist. I also know that matter cannot escape from the black hole once it has crossed the event horizon.

It seems we might have two different definitions of the verb 'to know' here. I cannot infer your definition from your quote "As you know, we cannot directly know anything about a BH," because the first instance of 'to know' seems to mean something different than your second instance of 'to know.'

I don't want to get into a big semantics discussion but I just need clarification as to what you think that 'to know' means before we can continue to discuss the topic.

Thanks for your time,
Mike

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