Philosophy vs. Data.

Some say "I have no philosophy, I simply follow where the data lead." But they're deceiving themselves. Your philosophy tells you how to interpret the data.

This shows up often in economics. If a certain policy maximizes cumulative welfare, it's deemed the best option. This is very blatantly a utilitarian philosophy, but it's argued as science.

Now this is where most economists would jump in with all sorts of qualifiers, but the point remains. We can argue about the numbers and methods, but most of the time we really just have different philosophies, we should spend our time debating those.