1. The quote below. The most likely way the author would know this is that the author went to med school. Its possible the author interviewed MDs about their med school experience, but seems less likely.
In medical school, aspiring doctors spend a few minutes at most on these relatively unusual conditions, which are thought of, and taught as, rare. By the time many begin practicing medicine, many doctors aren’t even aware of the minute distinctions on the sub-spectrum of posterior fossa cysts, if they ever really understood them at all.
2.
I come, after all, from a family of doctors educated at “top” institutions. How could it really be possible that despite decades of intense trying as educated, middle-class people, we knew absolutely nothing?