I think if people who need to sleep more is at a competitive disadvantage compar...

sigterm on Aug 24, 2014 | parent | context | favorite | on: A Gene That Makes You Need Less Sleep?

I think if people who need to sleep more is at a competitive disadvantage compared to other people, they will be less able to provide for the next generation, which will allow natural selection to slowly weed out those who don't have the gene.