Editing KnownSpace (section)

=== No Aliens ===
The human race has bimbled across a good couple of thousand cubic parsecs of the galaxy and has found some alien ecosystems with suitably oddball animals, but no actual intelligent alien civilisations. There's arguments as to whether species A is actually intelligent, and whether humans would recognise an alien civilisation if they saw it. But no blokes in furry suits and bandoliers making bear noises, no people in fake tan with corrugated heads, humanity it appears is alone. Of course there almost certainly will be alien civilisations out there someplace we just haven't met them yet. 

As with psionics, aliens should be something truly spooky and out of this world, and first contact fraught with strangeness and unguessable hazards and complications, not something you meet by the zooload down at the local bar.