imitation is one thing being real is another....no observable difference means jack sh"t if you don't mind me saying so.yes, a robot world that can imitate human action can exist. they would be able to act out what we do so there is no observable difference between them and us if we only observe with sight and sound. but a robot world that is composed of robots with emotion and "meaning" can also exist.
so we have robots acting as if they are alive and conscious...sheesh...thats a real use that is....I guess I can act like a robot too...
Meanign ony exists if it can be appreciated with feeling.
Tell me how do you make a robot feel?
feel the sensationof heat or cold or smell a flower in spring time or taste a cucumber that is chilled and loaded with vinegar and salt.
Taste the diference between sweet and sour or get sore eyes from staying out too late boozing on vodka spiked with extasy?