[Earw0rm]

It's not just the ratio. In many medical roles, engaging your full humanity with every patient would destroy you psychologically, even at a much lower number of patients.

"Follow the process, follow the training" is how medics, emergency responders and the armed forces are able to stay in the job more than a few years without burning out completely.

(It's also, as psychological defensive mechanisms go, somewhat fairer than those used in the past. Ask a retired medic in their 80s or 90s if you know any.)