Comment by daveguy

Until self check-out becomes faster and less obnoxious than having a skilled cashier do the job faster I don't think we need to worry at a large scale. We aren't going to be talking to robot waiters any time soon. If Carl's Jr. puts a glorified soda machine as my fast food interface I'll go to McDonald's where I can give my order in 10 seconds instead of fumbling with a machine for 2 minutes.