Hmmmm? you believe this?, reverse roles, if we go anywhere do we never interfere?
But what if they have? if you look at the technological advances in just my lifetime you should believe that eventually most things can be done, just a matter of time, no pun intended.
I tend to think we haven't been discovered because they let us exist, I mean ffs looking at the average XI member they surely can't believe we are an advanced civilisation?
Update, by amazing coincidence ufo files came on the telly, it was about cattle mutilation, where the sexual organs are surgically removed. They must be in love with cattle ?? slowly the horrific truth dawned, we have someone also obsessed with cattle @FRENCHI, ffs Frenchi is an alien?