[sprak]

It is surprising to me that the quote: "The definition of insanity is doing the same thing over and over and expecting different results." is from 1983 and not from Einstein. It fits so well as a (misguided) critique of quantum physics. The double slits experiment is indeed to do the same thing again and again, expecting different results.

[n4r9]

This has actually been traced back further to narcotics anonymous literature from 1981: http://www.nauca.us/wp-content/uploads/2015/04/1981-11-Basic... .

It's likely that Rita Mae Brown was paraphrasing the literature in her novel.

End of p.11, para.5.

[alehlopeh]

That isn’t the definition of insanity though. Just check any dictionary.

[I_complete_me]

To save you time I checked up the definition of "definition" (Wordnik dictionary)

1. A statement of the meaning of a word, phrase, or term, as in a dictionary entry.

2. A statement or description of the fundamental character or scope of something.

3. The act or process of stating a precise meaning or significance; formulation of a meaning.

So, it could be the definition of insanity. Just not the dictionary definition. YW.