Communicating between the animate and inanimate is hugely challenging. Computers speak a different language to organisms. We seek luminaries who don't find Douglas Adam's vision baffling.
The Sirius Cybernetics Corporation Nutrimatic Drinks dispenser:
"When the 'Drink' button is pressed it makes an instant but highly detailed examination of the subject's taste buds, a spectroscopic analysis of the subject's metabolism, and then sends tiny experimental signals down the neural pathways to the taste centres of the subject's brain to see what is likely to be well received. However, no-one knows quite why it does this because it then invariably delivers a cupful of liquid that is almost, but not quite, entirely unlike tea."
You should have an undergraduate degree a relevant physical science subject, an appreciation of science fiction and not know your boundaries.
Further information on English language requirements for EU/Overseas applicants.