Emulation leads to actualization?

Monday's class brought up an interesting point about the current level of computer technology. Due to our lack of knowledge of how to create true A.I., computers today simply emulate functions capable of the human brain. Take for example Deep Blue. It was created with the intent of emulating chess players like Kasparov. By using long series of code, a computer can be designed to act in a near limitless number of computational functions. If code-writers have a good enough understanding of how a certain activity works, they are likely able to write code to make a computer do the calculations necessary for activities. Although computers are limited by the code that runs them, like us they are limited by their tools. In my audio technology class I learned about the ranges of human hearing. Although it is possible for the human ear to detect sound from 2hz to 20,000 hz, we can only technically hear from around 3,000 to 5,000 hz. Once outside of that range, hearing steadily declines from its maximum point. The advantage of computers in this arena is that they use microphones, which can be designed to pick up any range of sound desired. Again, emulation has outdone what we do naturally. My question is, if we can design computers to do everything better than we can, if we eventually come up with how to make A.I., would we have made ourselves obsolete?