What is Intelligence?
{{mergefrom|Intellect}} [[Image:RobertFuddBewusstsein17Jh.png|thumb|180px|Humans have thought about the nature of intelligence for millennia. This picture is from a work by [[Robert Fludd]] published between 1617 and 1621.]] {{wiktionary}} '''Intelligence''' refers to certain mental powers. There is no general [[agreement]] on which mental powers are intelligent or part of intelligence. The idea comes from a [[Latin language|Latin]] word: ''intelligo'' meaning to ''choose between different options''. A part of intelligence allows people to solve [[problem]]s. These problems may be easy to solve. They may also be difficult to solve, and involve [[wikt:abstract|abstract]] [[thought]]. For some, intelligence is a [[property]], or [[wikt:characteristic|characteristic]] of the [[mind]]. For others, it is simply the working of the [[brain]], especially the [[cerebral cortex]]. If an answer is found to a problem, it can be remembered. That way, the problem is solved more quickly when it comes up again. This is what is called [[learning]]. There is disagreement about which has more [[influence]] on intelligence, [[genetics]] or [[environment]]. Also, intelligent [[behaviour]] is possibly learned when an [[organism]] (a living thing) reacts enough to a [[stimulus]]. [[Scientist]]s believe that intelligence can be [[measure]]d or [[test]]ed. A type of intelligence test would be solving many [[problem]]s in a very short time. Most of the problems have to do with [[sight|seeing]] things, or telling what a [[rotation|rotated]] [[shape]] would look like. Some are also related to [[mathematics]]: for example to tell what [[number]] would come next in a row. Other tests have to do with words or the understanding of [[language]]. After giving such a test to a person, a number would be calculated to give an [[approximation]] of the [[Intelligence quotient|Intelligence Quotient]] (IQ). == Intelligent machines == [[Computer engineer]]s try to build [[machine]]s that act as if they were intelligent. This is related to [[com