person A: I do programming work and I recently had a question I had to run by a co-worker. He is a programming wizard. He easily handled my issue and was using terms and methods I had never even heard of.
person B: i guess in your field of work you would run across terms and methods which are unfamiliar
person A: That is true. I usually can keep up_comma_ but this guy is on another level. 
person B: you'll find some like that_comma_ not much you can do