I've talked to a lot of people who believe that intelligence is relative, and that depending on the way you measure it, people are more or less intelligent. This does not make any sense and it stems from the fact that I do not think that we have clearly defined what intelligence is and how to measure it. This is illustrated in the study of artificial intelligence, where researchers essentially try to make computers "smart." They have succeeded at making their machine better at the assigned task, but we have yet to see a machine that would be classified as intelligent. A uniting theory is essential to advancing technology and our current understanding of the brain.
I have been thinking about this problem, and I believe that there are four requirements to intelligent beings - whether living or non-living.
- Necessity to survive, driven by a need to reproduce (I could foresee non biological intelligent beings not having a need to reproduce).
- Ability to receive consistent inputs from the environment automatically (ie - have sensory systems)
- Ability to store information
- Ability to use stored information to predict future outcomes. In other words, the ability to recognize patterns in the past knowledge and be able to analyze current input information for these similar patterns.
Essentially intelligence stems from your interaction with the environment, and beings that have no way to receive sensory input - whether tactile or sensory - cannot be intelligent. You can clearly trace the rise of intelligence through the phyla as organisms gain better sensory systems and adaptation techniques.