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Agree. This is Wikipedia stuff. Besides, there are no citations showing a usage as word. Our mission does not include equations. --Hekaheka (talk) 15:49, 23 March 2012 (UTC)Reply
Delete per my comments at F=ma. It is not the kind of language a dictionary does, or should, deal with. In general we suffer from "scope creep" where contributors want to include stuff that ought to be in Wikipedia, TVTropes, or whatever. Equinox◑16:48, 23 March 2012 (UTC)Reply
Maybe not complicated, but incomprehensible without specialized knowledge. My main point was that E=mc² is used as a symbol of the arcane/mysterious, but powerful aspects of science. The current definition is more like etymological information to go with senses of that sort than a proper definition for our purposes. As for the phrase itself, I've heard it used, but it seems to be pretty rare, and probably is dated, too: relativity seems a bit ordinary compared to the bizarre concepts that have come since E=mc² was the leading edge of science and Einstein was a huge celebrity. Chuck Entz (talk) 21:05, 23 March 2012 (UTC)Reply
The current definition of E=mc² doesn't really help understanding "this isn't E=mc²". IMO, the sentence itself deserves an entry, but not the formula. — Xavier, 00:17, 24 March 2012 (UTC)Reply
Keep. There is an entire chapter on the symbolic value of the formula in Martin Kemp, Christ to Coke: How Image Becomes Icon (2011), p. 307-339. Also:
1999, Mary Lynn Damhorst, Kimberly A. Miller-Spillman, Kimberly A. Miller, The Meanings of Dress, p. 351:
"Beauty isn't about looking young." OK, so it's not E=mc² or even Newton's apple. But coming as it does from a top cosmetics company, it does represent an attitude readjustment that makes Saul's change of heart on the road to Damascus look like a passing fancy.
For one thing, if you do a Google Books search for "the E=mc2 of", you'll get hundreds of hits for various other fundamental propositions from fields as diverse as fashion, religion, advertising, biology, and politics. For example:
2010. Stephen Batchelor, Confession of a Buddhist Atheist, p. 154:
If conditioned arising was the e = mc² of Gotama's vision, the eightfold path was his first move in translating that axiom from an abstract principle into a civilizing force.
Here are some more examples that I think support a distinct sense:
2006, Jeff Byles, Rubble: Unearthing the History of Demolition, p. 70:
Loizeaux's battle plan remains formidably elegant, the E = MC² of demolition.
2001, Neil Henry, Pearl's Secret: A Black Man's Search for His White Family, p. 282:
What counted most through the generations, far more than any other factor, regardless of our race, was how we treated those we loved and how well we loved. That seemed the transcendent lesson or moral that my search had revealed. And it held true whether the figure was my mother or Fredda on one side of our family tree, or Rita or Anna Beaumont on the other. Simple as it was, it was my E = mc².
It appears that the term can be attested as a noun with the more general meaning “ fundamental (or magic) formula ”: , , . Keep, but with only this meaning. --Lambiam10:11, 14 January 2020 (UTC)Reply
Yes, I didn’t pay enough attention and did not realize there were two entries here. Delete. (I still think the English term is a noun: “my E = mc²”, “the E = mc² of ...”. --Lambiam22:07, 14 January 2020 (UTC)Reply
