Originally posted here by zENGER
20 years of experience in computers does you NO GOOD. The computers from 10 years ago are so diverse than the computers of today. I personally am 25, and started diddling with computers around the age of 6. Does this mean I have 20 years of experience? I guess it does, but the computers I used then were commodores and have no bearing on what I can do with a computer today.
I would say that a computer expert is someone with a vast technical knowledge of any subject involving computers. Computers is such a broad field that includes, workstations, servers, networks, security, programming, etc.