There's a lot of noise online about this kind of thing, half of it contradictory. This felt like one of the more grounded explanations I've come across.

https://louiswyna569.scriblorax.com/posts/a-short-history-of-harley-street-and-why-it-still-matters-for-therapy

There's a lot of noise online about this kind of thing, half of it contradictory. This felt like one of the more grounded explanations I've come across