Tag Archives: Arthur Cushman McGiffert

Never Attribute to Malice That Which Is Adequately Explained by Stupidity

Robert Heinlein? Napoleon Bonaparte? Ayn Rand? David Hume? Johann Wolfgang von Goethe? Robert J. Hanlon? Arthur Cushman McGiffert? William James Laidlay? Ernst Haeckel? Thomas F. Woodlock? Nick Diamos?

Dear Quote Investigator: It is easy to impute hostility to the actions of others when a situation is actually unclear. A popular insightful adage attempts to constrain this type of bitter speculation. Here are two versions:

  1. Never ascribe to malice, that which can be explained by stupidity
  2. Don’t ascribe to malice what can be plainly explained by incompetence.

This notion has been attributed to military leader Napoleon Bonaparte, to science fiction author Robert Heinlein, and to others. Would you please explore its provenance?

Quote Investigator: QI has found no substantive support for ascribing the statement to Napoleon Bonaparte. Robert Heinlein did include a thematically similar remark in a 1941 short story.

The earliest close match known to QI appeared in the 1980 compilation “Murphy’s Law Book Two: More Reasons Why Things Go Wrong” edited by Arthur Bloch. Boldface added to excerpts by QI: 1

HANLON’S RAZOR:
Never attribute to malice that which is adequately explained by stupidity.

The description “Hanlon’s Razor” was used because the creator was a computer programmer named Robert J. Hanlon. The phrase “Hanlon’s Razor” was analogous to the phrase “Occam’s Razor”. Both referred to heuristics designed to prune sets of hypotheses by favoring simplicity. More details about Hanlon are presented further below based on the research conducted by quotation expert Mardy Grothe appearing in the 2011 book “Neverisms”.

Many people have expressed similar thoughts over the years and additional selected citations in chronological order are shown below. Continue reading

Notes:

  1. 1980, Murphy’s Law Book Two: More Reasons Why Things Go Wrong, Compiled and Edited by Arthur Bloch, Quote Page 52, Price/Stern/Sloan Publishers Inc., Los Angeles, California. (Verified with scans)