Remember the practical rules that will inevitably govern the behaviour of any alien "visitors":

1. They will be predators by descent at the apex of their food chain.
2. They will be utterly ruthless in their attitude to any competitors.
3. They will put their own welfare before ours in all cases.
4. They will assume that we operate as a species to the same rules.

Just put all this alien contact stuff through that filter and just hope to God that the UFOs aren't alien.

" if you don’t like the religious Right, wait until you meet the non-religious Right.."