@WeThePeople
Science is one of the 4 ways that humans make decisions. Rationality is the dominant one and influences Science. (the others: Authority, Intuition).

A political party used to revolve around policies. While some parts may be driven by ideology, they could have coordinated around a common way of thinking.

With the opinion of Science as a differentiator, it is more clear than ever that today's Rs are fundamentally different thinkers.

Ergo, you may not be able to argue with them.