@losttourist @cstross @tek I've been warning people for years. I have a theory. The fact that we've never been able to detect any extraterrestrial life out there is down to the theoretical "Great Filter" but I suspect rather than filtering out war-like species or species with a particular level of technology.. I propose that some technologically advanced species is destroying systems where the inhabitants have discovered Marmite or Marmite like substances.
Just like every species has its own variation of Gin and Tonics (jynnan tonnyx, gee-N'N-T'N-ix, or jinond-o-nicks) I calculate that at some point in a species development they become self destructive and invent a Marmite analogue and this is seen as an affront to the universe and must be erased.
Nature may abhor a vacuum but the universe really hates Marmite.