The number of experts (who are expert in a single field) is increasing. See: https://www.openculture.com/2017/06/the-illustrated-guide-to-a-phd-12-simple-pictu

The number of experts (who are expert in a single field) is increasing. See: https://www.openculture.com/2017/06/the-illustrated-guide-to-a-phd-12-simple-pictures-that-will-put-the-daunting-degree-into-perspective.html https://www.openculture.com/2017/06/the-illustrated-guide-to... The number of polymaths/jack of all trades types is maybe holding steady or possibly falling as a real number, but agree, as a percentage of the population seems to be decreasing.