u/Glum_Suggestion_8446

I was watching The Mentalist the other night and started wondering if there are really people like Patrick Jane out there. Now, of course it's just a TV-show, but still, are there people that perceptive, and with such a developed sense of deduction? Another fictional example might be Sherlock Holmes.

And, of course, if there are people like this, is this a skill one can develop?