Evidence of intelligent behavior - Artificial Intelligence:
Machines mean they could simply be personal computers, or they could be robots with embedded automative systems, or a mixture of both of them. Why would we want to assemble intelligent systems? One answer appeals to the reasons, why we use computers in general: to complete tasks which, if we did them by hand would be error prone? For case how many of us would not reach for our calculator if required to addition of two different digit together? If we diagnose this up to more intelligent tasks, then it should be achievable to use computers to do some fairly complicated things reliably. This reliability may be very helpful if the particular task is beyond some cognitive limitation of the brain because this is totally based on nerves system, or when human intuition is counter-constructive, like in the 'Monty Hall' problem define below, which many people - some of whom know themselves mathematicians - get wrong.
Another reason we might want to build intelligent machines is to enable us to do things we couldn't do before and make it comfortable for future. A widest part of science is based on the utilization of computers already, and more intelligent functions and applications are more gradually being employed. The capability for intelligent software to increase our abilities is not limited to science, obviously, and people are working on "AI" programs which can have a creative input to human activities like composing, painting ,reading and writing.
Finally, in constructing intelligent machines, we have to learn something concerning intelligence in humanity and other varieties