From: Harbinger on
I think it most likely that we are expeiencing a form of tourism by
bored, superior beings who seek better than Newsight, erm, night, erm,
Newsnight - and Paxman, the latter a bit like noughts and crosswords,
as it were.

Level I: Quick look round the SpaceTime Place, having
chosen from a catalogue.
Level 2: Silly Inteactions. 'We are from
Venus'.
Level 3: Live amongst them: occupy a Hybrid for a time -
costly!
--
Uncle English.