Aardvark

and i doubt the bit about the fast food restaurant, robots are logical, customers arent. I know from bitter experience.

Alright, it wouldnt be exactly like watching twins, but for all practical purposes it would be like watchiing twins who had been seperated and raised in different environments. Of some interest, but not overwhelming scientific importance. Cloning needs some more arguments in its favour to persuade people.

Watching a clone play chess would be like watching twins play chess. Of no particular interest. Super computers and the possibility of AI is interesting.