Will machines completely replace all human beings?

A needle which mimics the mosquito’s unique “stinger”, making injections painless, was developed by microengineers.

Contrary to popular belief, a mosquito can stab you with its proboscis without you feeling a thing. It then injects anticoagulant saliva to stop your blood clotting while it feeds, and it is this that carries the bacteria that cause irritation and pain.