Do you really think the intellectually disable can't discern between life and death, right and wrong, toxic and non-toxic, father and mother? Have you done any CIP (community involvement programs) with them? Some enlightened companies even employ them to uphold their dignity as a human being and be responsible citizens.
Some forummers here are even worse - their brain has degenerated so much that they become intellectually bankcrupt or decay. They can't think straight. Anything to do with MM Lee, Spore gahment, MIWs - must be bad.