what do people mean when they say science is always changing, and what is the example of science changing?

Question

?

In: 0

Answer 1

Probably [this](https://www.pbs.org/newshour/health/ignaz-semmelweis-doctor-prescribed-hand-washing). It is an example of how long it could take to discover a new scientific knowledge, perform a test, confirm it, and then – actually convince doctors to **wash their hands** to stop the 30+% mortality rate in mothers and their newborn children.