On Thu, 23 Sep 2004 08:11:25 -0800, "Vanilla Gorilla (Monkey Boy)"
transparently proposed:

On Fri, 24 Sep 2004 03:37:33 +1200, "EvolBob"
wrote in alt.fan.art-bell in message :

Three things are certain:

1 We are not alone
2 Intelligent life that has been around more than a million years is aware of us.
3 Earth has been visited; I said Earth - not us!

Your definition of "certain" leaves a lot to be desired.

Like what, PROOF?