Even if one is to accept this point, when Democrats say they are the party of science, they are saying that they adhere to science much more than the Republicans. They are not saying that their scientific understanding is infallible so just pointing out some kind of flaw in the Democratic/liberal scientific understanding does not really make much of a point. People are fallible and therefore liberals, a subset of people, are fallible and therefore it should be expected that liberals will be wrong on some scientific matters from time to time. So really, you are just throwing out some stuff that doesn't really add up to much.
So again, the "party of science" is a comparative statement and your global warming example is a great one for the Democrats side. So let's say that they are wrong that the science is settled.
So the Democrats say: "97% of scientists agree that global warming is happening due to human activity and therefore we conclude that it's settled science that global warming is caused by human activity"
And the Republicans say: "97% of scientists agree that global warming is happening due to human activity and we think they are generally incorrect and we shouldn't really bother trying to counter it".
Now as a comparative position, it's pretty clear that the Democratic position is much more inline with the scientific view on the matter.
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