Re: The usual definition of "observable Universe" includes being observable.
Ah the sockethole theory:-
"And it was to this planet that unattended sockets would make their way, slipping away quietly through wormholes in space to a world where they knew they could enjoy a uniquely soketoid lifestyle, responding to highly socket-oriented stimuli, and generally leading the socket equivalent of the good life."
(Apologies to D. A.)
Coat? Nah, just looking for my biro ------->