A better way to think about this is that an epidemiologists take the inside view (because they are experts at the inside view) while the generalists take the outside view (because that is what they are good at).
In scenarios with high uncertainty in parameters, the outside view can perform as well as or better than the inside view.
In scenarios with high uncertainty in parameters, the outside view can perform as well as or better than the inside view.
https://wiki.lesswrong.com/wiki/Outside_view