That’s because modern physics is difficult to make progress in, requiring lots of mathematical and theoretical knowledge in addition to sophisticated, costly ex

That’s because modern physics is difficult to make progress in, requiring lots of mathematical and theoretical knowledge in addition to sophisticated, costly experiments involving large collaborations. Someone lacking in the appropriate study and experience probably isn’t aware of all the ground that’s already been covered, and what it would take to have a breakthrough. The lower hanging fruit has already been picked.