I use my intuition a lot. I jump to a lot of conclusions, pretty much instantly.
I don't bother trying to prove anything unless I have a good reason to and it's worth the time. Why bother wasting time proving something if it's not important enough? I'm usually right. If I'm wrong, it's usually because I didn't have enough information to make the right decision. But life doesn't wait for you to get 100% of all the facts and then prove everything 100%. You have to be decisive, not indecisive. General Schwartzkopf said that he would rather have an officer who is decisive, because even if you make the wrong decision, you can usually make it work out right anyway. Over the past few years I have trained myself to be very decisive and make decisions quickly. I think it has worked out well for me. Sometimes I do make a mistake but it's always quick & easy to correct. So I frequently use my intuition to make quick decisions. That's an INTJ talent.
Another INTJ talent is pattern recognition. We recognize similarities and patterns in things that are technically very different. Patterns just jump out at me. I spot them easily. For example, after spending a little time observing INTP's discuss things, I noticed that INTP's just talk aimlessly about a topic for a long time and get nowhere. They draw no conclusions and they don't accomplish anything. So that pattern reminded me of brownian motion, which is also the same as a random walk, or drunkard's walk. You can see illustrations of this on wikipedia:
Random walk - Wikipedia, the free encyclopedia
So my INTJ mind saw the similarity of patterns between INTP discussions and random walks.
INTJ's are great problem solvers.
We heavily use our intuition to solve problems.
We're also good analyzing problems, breaking them down into their components.
We come up with solutions quickly.
And our solutions work.
A lot of times, other personality types scoff at my ideas because they say there isn't enough proof or because they can't see the patterns that I see.
I guess they don't have as much intuition and pattern recognition ability.
I also tend to generalize a lot. And people often disagree with me because of that. I guess it's because I like to use pattern recognition a lot more than they do. I see patterns, so therefore I see general rules and trends in things. Many other people refuse to see those things, or cannot see them.
I think these are some of the qualities which make a great strategist, which I think is why the majority of the greatest generals in history have been INTJ's.