Again, if the science is so settled, why are scientists still trying to "understand the contribution of natural versus anthropogenic causes of climate change"?

Improved Measurements of Sun to Advance Understanding of Climate Change - US News and World Report

WASHINGTON—Scientists have taken a major step toward accurately determining the amount of energy that the sun provides to Earth, and how variations in that energy may contribute to climate change.
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The new findings give confidence, the researchers say, that other, newer satellites expected to launch starting early this year will measure total solar irradiance with adequate repeatability—and with little enough uncertainty—to help resolve the long-standing question of how significant a contributor solar fluctuations are to the rising average global temperature of the planet.
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The new work will help advance scientists' ability to understand the contribution of natural versus anthropogenic causes of climate change, the scientists said. That's because the research improves the accuracy of the continuous, 32-year record of total solar irradiance, or TSI. Energy from the sun is the primary energy input driving Earth's climate, which scientific consensus indicates has been warming since the Industrial Revolution.