“Traction is basically quantitative evidence of customer demand.”

Why it was said

Gabriel Weinberg and Justin Mares open Traction by fixing what the word means, and they borrow this definition from investor Naval Ravikant, co-founder of AngelList. The rest of the book, built around channels for getting customers, assumes this measurable sense of the word.

What it actually means

Founders often talk about traction loosely: good feedback, some press, a buzzing launch. Ravikant's definition cuts through that. Traction is a number, and it is about customers wanting what you sell. Depending on the business it can be revenue, active users, sign-ups or engagement, but it has to be counted and it has to reflect demand, not mere interest. The definition matters because it changes how you spend your time. If traction is evidence of demand, then building more features in private is not progress unless it moves that number. It also gives founders and investors a shared, testable language.

How to use it

1. 1Choose the one number that best shows customers want your product, and track it weekly.
2. 2Next to every task on your list this week, write whether it could move that number.
3. 3When you describe progress to anyone, lead with the number, not the story.