there was no science [] so there was more mystery to life?
it's more complex than that, but in a way
religious belief exists in the realm of the unknowable. true faith is by definition something you believe, rather than something you can know.
science diminishes the unknown. not merely science, but rationalization of life, time, economy.
it seems like you're big into Weber? he wrote pretty extensively on this - the transition to a rational mindset that predates modernity
so yes, I would say there was definitely more mystery to life in the 1300s
tho science is more a byproduct of rationalization than the other way around
I'm talking about science specifically here because we're talking about something that is specifically related to biology, medicine, etc