It's true that it's useful but its the same mathematical talent that was (ab|mis)used by Losada, according to the article. What was useful here was Brown's scep

It's true that it's useful but its the same mathematical talent that was (ab|mis)used by Losada, according to the article. What was useful here was Brown's scepticism, borne by him being an amateur(having no bread to lose over it).