So, in economics, (and now expanding to other fields too, most significantly marketing tho I suppose commerce is but an extension of economical thoughts), there is a very widely held principle that 80% of the output comes from 20% of the input. As in, say in a nation's economy, 80% of its total wealth is held by only 20%, or as the person for whom it is named—Paraeto discovered, in his garden, 80% of the peas were produced by only 20% of the plants.
I was wondering is there was a mathematical description cataloguing this phenomenon, and if so, is this related to the stabilising nature of 'e', like how continuously compounding interest is not very different from a [modified] simple interest formula.
Does it work? No, actually it does not -- it is a rule of the thumb. But those who believe it find "evidence" enough to do so.