You know if you hit someone from behind right at the base of the skull they'll be out for a good twenty minutes, nice and clean. You can grab their wallet and be long gone by the time...
Live off Ramen noodles and forego luxuries like furniture that matches or curtains to support the herp addiction with whatever (legal) income you may have.
"Genes, Like Leibnitz's monads, have no windows; the higher properties of life are emergent... And once assembled, organisms have no windows." - Edward Wilson, Sociobiology