This is why I love Dean. People assume Sam is the smart brother because he went off to college and he isn’t some wreckless playboy like Dean. (which I don’t even really see, but I know the first 2 seasons they tried to make it that way) But Dean can literally rebuild a car without a manual (I’m sorry, can you even change your oil? Because I know maybe 5 people who can actually do it themselves and 3 of them work as mechanics.) Dean has made weapons and tech out of every day items. (Besides MacGyver, nobody does that, not even Sammy) He doesn’t always get childhood references because he didn’t have a normal mother/father to read him bedtime stories or anything like that. But he has obviously gone out on his own and read some pretty interesting books, and I doubt they are ones John would have wanted him to read. Dean is brilliant in his own way. He may not be cliche ‘I spent 40 grand on an education’ smart, but guess what, he can do a ton of things that most college grads would probably never waste time to learn.
And this, ladies and gents, is why a renaissance man is the only way to go! Now, where to find one….