If you're glad the thermometer tells you the temperature is warm because you want to take a walk outside, that preference for a warm temperature is subjective. If you then notice that you have that preference and you report it, the report can be an objective description. But those are two separate things, the preference and the report.
I agree that understanding is about assimilating some information to a larger system (a worldview or culture). I'm just trying to get across here that understanding isn't the same as measuring or tracking since the assimilation will naturally differ for subjects with their respective memories, personalities, worldviews, and cultures. So understanding has a subjective component.
I've written more about this here:
