The challenge of physics is that the relationship between concept and math reverses as the further you go. Early on, studying Newtons laws, the concepts are wa

The challenge of physics is that the relationship between concept and math reverses as the further you go. Early on, studying Newtons laws, the concepts are way easier than the math for most people. Inertia, parabolas, friction, angles.. we can see it and use it every day. But the current state of knowledge is that we can reliably use math to calculate phenomena that seem to have no analog in the familiar concepts that govern our everyday experience. The math of dark matter is fairly straightforward but the concept is so weird that tons of people reject it out of hand (as seen in the comments whenever it comes up on HN).