[Tom Bombadil]

But to say that 25 years will reveal the truth shows a little too much trust in one's own intellect. They don't know, and their statistics involve assumptions.

[Shryke]

I wasn't referring to the 25 years, which indeed may be a tad optimistic. The assumptive nature of the statistics are also true; however, they are very practical assumptions. We can, after all, pretty much be sure of the amunt of stars we can see, correct? The Hubble sees so many stars it borders on incomprehensible. The assumption that planets orbit alot of these stars is, in my opinion, very straightforward.