It only needs to be "data-driven and backed by science" if it's making scientific claims. It's totally okay to write a book of advice about workplace interacti

It only needs to be "data-driven and backed by science" if it's making scientific claims. It's totally okay to write a book of advice about workplace interactions based on anecdotes or your own experience (there are many such books) - but it's an entirely different thing to make scientific-sounding claims about how people are categorized.