[derefnull]

  folly [https://www.wordnik.com/words/folly]
  fŏl′ē
  noun
  Lack of good sense, understanding, or foresight.
  An act or instance of foolishness.
  A costly undertaking having an absurd or ruinous outcome.

At the risk of starting a meta conversation (pun intended) I wonder why the team chose this name for a set of core library components. The GitHub page indicates it is a loose play on an acronym.

  “acronymed loosely after Facebook Open Source Library”

Yet why accept a name with a negative connotation.. The name leads the product, so why not at least make it _neutral_?