# Law of the instrument A form of [[Cognitive bias]] in which the familiarity with your tools may bias your approach to design, research, or response. [[Abraham Maslow]] wasn’t the first to say it, but it is referenced with some frequency. > “I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail.” > [[maslow1966PsychologyScience|Maslow, A. H. (1966). Psychology of Science.]]