yes I believe one of the videos of him expresses the better comfort the negative pressure has on his body somehow over the positive pressure contraptions he's used.
I remember a conversation in the 90’s about lung damage from over-inflation by dialing the volume incorrectly. They were talking about tech that was better at avoiding it, and thus the lung damaged caused by it.
That conversation stuck with me because I found it horrifying.
The field uses the term "barotrauma" for this. Ventilators use high pressure alarm limit among other things to limit the potential for barotrauma in volume-controlled modes. There's also flow-terminated modes which try to deliver a fixed volume but will terminate the breath if a flow criteria is met. The high pressure alarm limit can also terminate a breath early to try to prevent barotrauma.
Mechanical ventilation is very complex and has come a long way since the 1990's. The lung is an exceedingly complex organ, and breathing itself is an exceedingly complex bodily function that we largely take for granted until something goes wrong.
Suction devices also have their own horrifying outcomes. Someone told me a story once in the context of maximum vacuum limits of an EMT that was suctioning debris and fluid from an open brain injury and had the vacuum up so high they were vacuuming a person's brain tissue.
College roommate told of a history prof who worked for free. Plastic surgeon botched a lipo and caused muscle damage. Malpractice paid him enough to retire his board-flat ass.
He worked for free, or next to nothing, taught the curriculum he wanted to (can’t afford to fire him!). Apparently he brought high end audiophile speakers to school and played classical music on them when not lecturing. The kind that cost half a year’s salary for a teacher.
Many professors work for free… it’s called an unpaid adjunct position. You’d be surprised how extremely common it is- students paying a ton and the professors unpaid. Often they are doing it for experience hoping to move into a paid position someday, which are in short supply… or they have multiple jobs and the other one is related in some way and pays, but being a professor has advantages such as students that will work for you for free, and the ability to use the university’s name when writing grants and papers.
I knew a humanities professor that taught a heavy course load for years, and he and his wife lived off her paycheck serving food in the university cafeteria.
Sometimes getting an unpaid adjunct position can still be extremely competitive and hard to get. Academia is pretty weird.
