Well, it’s not that you need higher energies to invent a new theory (even though you do, on a personal level), the problem is that it takes a discovery of a new

Well, it’s not that you need higher energies to invent a new theory (even though you do, on a personal level), the problem is that it takes a discovery of a new particle to see which of these theories may be correct (and which of them aren’t), and new particles are only expected to be found as products of an interaction between particles at higher and higher energies.