When I look around my University I see people doing something, let’s call it “science.” I’d like to define this activity to distinguish it from similar but different activities. The very fact that my efforts to do so have created a Demarcation Problem means the definition is more convoluted than simply “empirical investigation.” If that’s all that science was, there wouldn’t be a demarcation problem!

Elon Musk seems to “think” (and I use this word very loosely) that science is when people do experiments or try to figure out the truth. But if that were the case, there would be no debate, no demarcation problem, no counter examples.

What we need to do is describe what scientists do that non-scientists don’t do with sufficient rigor to distinguish the two groups. As I said, peer review is a salient feature present in one group and absent in the other. Do you have a definition?