Sure, but if you repeat your utterance there's a good chance that the conditions...

YeGoblynQueenne on Sept 15, 2016 | parent | context | favorite | on: Researchers achieve speech recognition milestone

Sure, but if you repeat your utterance there's a good chance that the conditions will have changed the second time around- maybe background noise will have subsided or you'll have swallowed that bit you were chewing on and so on. It makes sense to ask you to repeat a couple of times even if it's a computer you're talking to.