Originally Posted by The Batlord

True. But to claim knowledge, even a negative claim that something doesn't exist, is still making a claim that something is true. And to make a claim requires proof. A lack of proof for reincarnation only proves that reincarnation hasn't been proved. Nothing more. It may be evidence for its unlikelihood, but not for its nonexistence.

And you can't claim to know something that hasn't been proved with sufficient evidence, only that you believe.