[bobdsmith]

A scientific rather than math related analogy would be that we would have to observe the behaviour of every rock that has ever been suspended in mid-air, and also every rock that ever will be suspended in mid-air to trust that rocks suspended in mid-air do fall.

[Doctor Stochastic]

Is't the Moon just a big rock, suspended above the Earth, by gravity?

[b_sharp]

"A scientific rather than math related analogy would be that we would have to observe the behaviour of every rock that has ever been suspended in mid-air, and also every rock that ever will be suspended in mid-air to trust that rocks suspended in mid-air do fall.

Just make sure your head is not under one of them there rocks.

It may have been a poor analogy, but the essence of the two is the same, we do not need to see each and every instance of a phenomenon to conclude that there is consistancy along the entire spectrum of effects.

Your analogy is better, just a bit more dangerous. Rocks hurt more than birds do.