It is patently impossible to discuss social engineering or the automation of a society, i.e., the engineering of social automation systems (silent weapons) on a national or worldwide scale without implying extensive objectives of social control and destruction of human life, i.e., slavery and genocide.
The solution of today's problems requires an approach which is ruthlessly candid, with no agonizing over religious, moral or cultural values.
Yes you can. You just need fewer people to feed.