[BerislavLopac]

My main issue with the notion of 10x programmers is this:

- A 1 meter stick is 10x longer than 10 cm stick.

- A 10 years old car is 10x older than a 1 year old car.

- A $5000 laptop is 10x as expensive as a $500 one.

These are all clear and measurable quantities, representing well-defined properties.

How do we measure the difference between a 1x and a 10x programmer? All measurements that were tried in the past are either unrepresentative and easy to game (lines of code, number of commits...), or too vague or depending on interpretation to be useful for any objective measurement (productivity? languages learned? years of experience? development velocity?...)

Until we can find (eve we ever can) a clear, representative and objectively measurable value that we can use to rank programmers, any idea of 10x will not mean anything - or, to be precise, will mean what each of us wants it to mean.