![Back of the napkin proof: Why Engineers will always earn less than Managers. – Designed Online Success Back of the napkin proof: Why Engineers will always earn less than Managers. – Designed Online Success](https://interwestit.files.wordpress.com/2014/11/engineers-make-less-than-managers1.jpeg)
Back of the napkin proof: Why Engineers will always earn less than Managers. – Designed Online Success
What is the meaning of "I did some back-of-the-napkin math."? - Question about English (US) | HiNative
![Ross Merriam on Twitter: "@Viral_Drake Did the math and got 19.7%. That's just back of the napkin (literally) and I carried some rounding errors through but I'm still pretty sure I'm great. Ross Merriam on Twitter: "@Viral_Drake Did the math and got 19.7%. That's just back of the napkin (literally) and I carried some rounding errors through but I'm still pretty sure I'm great.](https://pbs.twimg.com/media/D7n6oFDW0AER15B.jpg)
Ross Merriam on Twitter: "@Viral_Drake Did the math and got 19.7%. That's just back of the napkin (literally) and I carried some rounding errors through but I'm still pretty sure I'm great.
![Guesstimation Solving the Worlds Problems on the Back of a Cocktail Napkin: Solving the World's Problems on the Back of a Cocktail Napkin: Amazon.co.uk: Weinstein, Lawrence, Adam, John A, Adam, John A.: Guesstimation Solving the Worlds Problems on the Back of a Cocktail Napkin: Solving the World's Problems on the Back of a Cocktail Napkin: Amazon.co.uk: Weinstein, Lawrence, Adam, John A, Adam, John A.:](https://m.media-amazon.com/images/I/51ty59J5qhL.jpg)