re: Spinoff: Do you believe?

I believe there is almost certainly life out there.

I believe there is probably at least some intelligent life out there but it is probably very rare with simple life being far more common.

I believe there has never been any life from another world visit this one.

I believe it's highly unlikely our civilization will last long enough to ever reach another inhabited world outside our own solar system.

I believe if we ever do discover a new intelligent life form, it will be best if we do not reveal our existence to them at least until we thoroughly study them to make sure they are not a threat be it from invasion/attack or even inadvertent exposure to illnesses for which we have no immunity.