Nassim Taleb has the best definition of “nerd” that I’ve ever come across. Nerds are people who cannot think outside whatever box they’ve been given. Engineers, physicists, mathematicians, IT professionals and many economists all make fine nerds. They perform expert, high-level operations within the confines of what can be exceptionally narrow disciplines — and have little ability to think outside that domain.
What nerds do can be impressive, but it’s important to understand why. Nerds do impressive feats that require computational brute-force and only apply to very specific activities. They fail, however, when trying to move beyond the confines of their specialties. They lack flexibility and the capacity to break context.