The thing is, even if you can't do much better than a computer on pure recognition of words, you have far superior error detection and correction abilities. If

The thing is, even if you can't do much better than a computer on pure recognition of words, you have far superior error detection and correction abilities. If a computer mishears a word, it likely just assumes it was whatever was closest, resulting in nonsense sentences. A human will be usually able to "fill in the blanks" on something they didn't hear, or failing that, be able to ask for someone to repeat it.