The problem is of expectations. We don't expect computers to write books (creativity is a Hard problem), but we do expect writers to use word processors.
Likewise, we shouldn't expect computers to deduce your ailment and prescribe treatment (critical thinking is also a Hard problem), but we should expect doctors to use computers to remember, search, and sort things for them: the things computers are good at.
We don't need the computer to think—we need it to help the doctor think. People should be working on that, not on systems to replace the doctors themselves.