As a child, I was aware that, at night, infrared vision would reveal monsters hiding in the bedroom closet only if they were warm-blooded. But everybody knows that your average bedroom monster is reptilian and cold-blooded.Tyson, Neil deGrasse; Avis Lang (2012-02-20). Space Chronicles: Facing the Ultimate Frontier (Kindle Locations 1880-1882). Norton. Kindle Edition.