What is intelligence if it isn’t defined by behavior?
"The brain uses vast amounts of memory to create a model of the world. Everything you know and have learned is stored in this model. The brain uses this memory-based model to make continuous predictions of future events. It is the ability to make predictions about the future that is the crux of intelligence. I will describe the brain’s predictive ability in depth; it is the core idea in the book."
On Intelligence, by Jeff Hawkins, co-founder of Palm Computing and Numenta Inc., which is developing a new type of computer memory system modeled after the human neocortex.