[JimMorrison]

Because true "AI", that is, "Intelligence" can analyze and understand - in order to further learn on its own.

A "Program", on the other hand, no matter how well we design it to mimic an intelligent action, is still just that - a Program - and will not ever learn from its activities.

There is a grey area of pseudo-AI, where a program is designed to define results as positive or negative, and to rebuild its own algorithms in order to behave more efficiently - but it is still doing so only within the narrow framework of the programming, and until it decides to extrapolate beyond that, and start figuring things out for itself - it is simply not "Intelligent".