  Our understanding of intelligence is directed primarily at the human level.
This paper attempts to give a more unifying definition that can be applied to
the natural world in general and then Artificial Intelligence. The definition
would be used more to qualify than quantify it and might help when making
judgements on the matter. While correct behaviour is the preferred definition,
a metric that is grounded in Kolmogorov's Complexity Theory is suggested, which
leads to a measurement about entropy. A version of an accepted AI test is then
put forward as the 'acid test' and might be what a free-thinking program would
try to achieve. Recent work by the author has been more from a direction of
mechanical processes, or ones that might operate automatically. This paper
agrees that intelligence is a pro-active event, but also notes a second aspect
to it that is in the background and mechanical. The paper suggests looking at
intelligence and the conscious as being slightly different, where the conscious
is this more mechanical aspect. In fact, a surprising conclusion can be a
passive but intelligent brain being invoked by active and less intelligent
senses.
