Why the idea of AI is flawed

Artificial Intelligence is the Philosophers Stone of the computer world. Scientist get closer and closer to developing a computer that can think as well as a person. 
The concept however, can never be satisfied. The idea that an artificial intelligence can be as good as a human is simply ridiculous.
For a start, the definition of what intelligence constitutes is murky enough. Secondly, if a computer ever could “think” it would only think within the limits of it’s programming. It would only ever be artificial, and therefore not real intelligence.