Hard to say what exactly a PhD teaches. It is a unique type of qualification that varies radically between situations, even in the same department. I can definitely say there is a difference between people with and without a doctorate, but many of the skills gained are soft skills.

Thank you for saving me from diving in the hole.

“This work was financially supported by the Department of Microbiology, Faculty of Pharmaceutical Sciences, Fukuoka University, Japan.”

https://www.sciencedirect.com/science/article/abs/pii/S0001706X19301202?via=ihub

https://www.sciencedirect.com/science/article/abs/pii/S0001706X19301202

“The electronic song “Scary Monsters and Nice Sprites” reduces host attack and mating success in the dengue vector Aedes aegypti” - original article title.

Highlight: Adults entertained with music copulated far less than their peers