At the most basic level, science is about building models. If you just build a model with no connection to real life, that isn't science. Instead, the model has to somehow agree with real actual data.

A research team led by Prof. Li Hai from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has developed a new computational model that can accurately predict lung motion ...

Researchers at the University of Chicago have created the first usable computational model of the entire virus responsible for COVID-19—and they are making this model widely available to help advance ...