The vast majority of science research doesn't affect public policy. It's toward some goal, like making a process work better. Those scientists still need to be honest, but nobody is throwing big money at them to sway their agenda. Then sometimes, suddenly, huge money depends on a question of science.

I assume concussion research was like this for a long time: they were just trying to find the best way to heal brains after damage, and it was fine to take money from whomever would fund it. Then suddenly there's a question relevant to policy: do football players suffer a lot of permanent brain damage?

In fact it's crazy that such research would be funded by an organization that would be destroyed if the answer turned out a certain way. One should expect no better than with cigarette companies funding lung cancer research.