[zelos]

Isn't the standard corollary to that "80% of features not being used" statement that it's a different 80% for every user?

[maximus-decimus]

Seems to be from Spolsky here : https://www.joelonsoftware.com/2006/12/09/simplicity/

"A lot of software developers are seduced by the old ‘80/20’ rule. It seems to make a lot of sense: 80% of the people use 20% of the features. So you convince yourself that you only need to implement 20% of the features, and you can still sell 80% as many copies."

“Unfortunately, it’s never the same 20%. Everybody uses a different set of features."