That's your definition of intelligence. You could solve problems quickly with a failure rate of 2%, but that 2% error actually kills off, deforms, or ostracizes 10% of your population, and that 10% contains 100% of what you need to solve your next set of problems. You destroy yourself by creating a definition of intelligence in the first place.
Yeah, so, I would have said it the other way around, myself: speed of processing is an intelligence. To be sure, I subscribe to the multiple-tracks-of-intelligence view.
