you do not necessarily have to say that machanical processes are intelligent because they do not have a soul.
According to dictionary.com, intelligence is defined as " 1. capacity for learning, reasoning, understanding, and similar forms of mental activity; aptitude in grasping truths, relationships, facts, meanings, etc. ".
Understanding requires conscious thinking, and mechanical processes cannot reason outside of specific information imputted into them through programming. Also, these programs cannot think, but only have the illusion of thought.
An analogy of this would be an array of lightbulbs. By flicking on certain lightbulbs, you may be able to spell your name. You could give a computer instructions as to when to flick on certain lightbulbs, but it would never have a stream of conscious thought.