Law of the instrument
The
law of the instrument,
law of the hammer,
Maslow's hammer, or
golden hammer is a cognitive bias that involves an over-reliance on a familiar tool. Abraham Maslow wrote in 1966,
"it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail."
The concept is attributed both to Maslow and to Abraham Kaplan, although the hammer and nail line may not be original to either of them.
In 1868, a London periodical, Once a Week, contained this observation:
"Give a boy a hammer and chisel; show him how to use them; at once he begins to hack the doorposts, to take off the corners of shutter and window frames, until you teach him a better use for them, and how to keep his activity within bounds."