I've said it a couple of times on here but I think 'perceivable intelligence' is a combination of four things, listed below in probably decreasing relevance (the middle two being jointly weighted):
Raw intelligence - your computing / processing power.
Effort - how much you put in to realise the results of your raw intelligence.
Common sense - the ability to be decisive, wise and consciously avoid error.
Focus - the ability to not get distracted (this is more of a sub-conscious thing that undermines the previous two categories).
There is a guy at work that is pretty much a cyborg. He is just ridiculous - his memory is virtually photographic, he has the highest processing I know... and the stamina this man has, my god! My brain will turn to goo after about 12 hours of hard work but this guy just soldiers on with maximum productivity. I am not anywhere close to this guy in any of the above categories - he is just shockingly, awesomely clever.
As for myself, I find answering the question a bit (for lack of a better word) crass so I'll just say my greatest weakness is my tendancy to get so pre-occupied / carried away with my own thoughts that my brain just stops recording. I lose my wallet, keys and phone all the time (i.e around the house). Never an actual issue but it does make me sometimes question whether I'm actually just a moron
By contrast, my greatest strength, sometimes a curse, is my own social awareness combined with my social skillls. I'm very good at perceiving what others like / dislike and correctly interpreting even the most subtle body language / tone of voice. This makes it very easy for me to get on with others and, whilst it can never sound a like a good thing, it makes me extraordinarily good at manipulating people. Perhaps a rung or two down from "these aren't the droids you're looking for". It's a good job I'm a nice person...
