Warning: Long rant on the philosophical meaning of “intelligence”.
There really is no such thing as “intelligence”, except that it is the most overrated concept in society. Why should someone who knows something more about a particular subject be called “intelligent”?
Perhaps they have spent longer memorising the subject; that’s not “intelligence”. Some say it’s not what you learn but how you learn and how quickly. But surely that can be attributed to greater concentration, greater ability to memorise and greater attention to detail.
What about people who can perform highly on IQ tests but don’t achieve high marks in school? Does that make them less “intelligent”? Perhaps they are just less focused and less willing to apply themselves. More achievements means higher “intelligence”? Once again, maybe they do not have the motivation to go out and perform those achievements.
Most say it is the ability to take in and process information. However, that is caused by greater attention and more efficient sending of messages between neurotransmitters. That isn’t intelligence. That is just the parts of your brain working harder or less harder than other individuals. Either due to biological factors or factors of the mind such as motivation or willingness to learn.
But I hardly think the workings of one’s brain is reason enough to call someone more or less intelligent than the next person. If you think the physical make up of the brain is a measure of intelligence that is entirely up to you. But to me, the socially made concept seems false, unnecessary and misleading.