Re: Where are the trees.
"There's no evidence that Mars was always dead." There is no evidence that... well, there never was a red teapot orbiting the sun _at some point in time_.
That's the thing. It's a negative proof, and one based on assumptions and dreams. Not hard data.
It's a bit like saying, if I keep building car parks on the moon, eventually a car *will* turn up. Yes, carparks and cars are extremely highly correlated, but one causes/requires/invokes the other in one direction only, not the other.