...when a person with a generally accepted "low level of intellect (e.g. poor IQ / exam scores)" achieves that of a person with a generally accepted "higher level of intellect" through insight, intuition and hard work (applying ones self etc).
Discuss. How do you define it?
Pick up a dictionary. Intelligence is a well defined term, it shouldn't mean anything "to you" except what it means, this is the base of language words have to be clearly defined so we can understand each other. If you want to discuss intelligence then discuss it, but don't try to redefine the word.
Also someone's intellect is their intelligence, so it makes no sense to define intelligence in term of intellect, and even if it did, it would make no sense to say that someone who's intelligent is someone who started with a lower intellect. Overall i really don't see what you're trying to do here.
Anyway to make things simple here's the definition from the oxford dictionary : The ability to acquire and apply knowledge and skills:
I think the definition of intelligence needs to be a lot more broad to be a good definition. It's a bit of a demarcation problem.
Here are some questions a good definition of intelligence should answer:
Can a computer ever be "intelligent"?
Can animals be intelligent?
What is the difference between intelligence and non-intelligence?
At the most extreme: can a single celled organism be intelligent?
What about non-biological processes, such as evolution? Is evolution "intelligent"?
Once you've got your demarcation line for intelligence drawn, what is the evidence which indicates whether something is intelligent or not?
A computer can be intelligent if we make a computer that fits the definition (it doesn't mean it is conscious, that's a whole other topic).
Animals are intelligent, you can see pretty much any animal you observe, sometime even over just a few minutes, acquire new skills.
Intelligence is more of a scale, but deciding wether you're on the scale or not is simple: if you can acquire skills or knowledge and apply them, you're intelligent, if you can't, you're not, how well you can do it would be what you can measure but as soon as your skill is not 0 (absolutely unable to acquire any skill or knowledge and apply it) then you're an intelligent being.
Not that i know off, i don't think any single celled organism can "acquire skills or knowledge" and "apply it", i could be wrong there.
No process can be intelligent, a process doesn't do anything, it just is, so no a process isn't "intelligent", event if intelligence emanates from evolution that doesn't make evolution intelligent. Also i'm not sure how you'd call evolution "non-biological".
The evidence is wether that something actually ends up acquiring skills or knowledge and applying it.