What technologies are overrated by insiders but underrated by outsiders?

Question

And why?

AnimalMuppet · Accepted Answer

Lisp. Haskell. (Um, probably many programming languages, actually...)Driverless cars.Philosophy. (Not a technology, but still.)

mdelias · Answer

Bitcoin. By definition ;)

wheresmycraisin · Answer

Deep anything.

darjagutnick · Answer

SWIFT UI :)?