Here's another place where I remember reading about 5 users, took me a couple of days to find it: https://www.nngroup.com/articles/why-you-only-need-to-test-wit

Here's another place where I remember reading about 5 users, took me a couple of days to find it: https://www.nngroup.com/articles/why-you-only-need-to-test-with-5-users/ https://www.nngroup.com/articles/why-you-only-need-to-test-w...