Comment by sampo
> findings can alter humanity itself
Higgs boson was predicted in theory in 1964, and found in LHC in CERN in 2012-2013. With this, all elementary particles in the standard model of particle physics have been found.
From the 1970s to 2010s, physicists believed in a theory called supersymmetry, which predicted supersymmetric partner particles for the known elementary particles. But these should have been already found in the energies used in LHC.
For the first time, there is no mainstream theory that would predict any new findings. Maybe the next bigger particle collider will find no new particles at all?
A collider produces far more than new particles or explanations. They produce papers and phds. In effect, thier primary goal is to produce stem careers. The new particles are just the public announcements. The collider doesnt even need to be functional. Much/most of the work occures before first light, before anyone turns it on. The design of the ring and its innumerable detectors and subsystems takes decades. So a great many people want the next collider to be funded regardless of its potential for scientific discovery.
The same discussion can happen re the ISS. Its primary purpose was not science. It existed to give shuttle a parking spot, to keep the US manned space program ticking along and to keep a thousand russian rocket people from going to work for rando countries. The ISS will soon end. Are we going to put up a new one? A place to park starliner and dragon? Or are we going to shut down low earth orbit spaceflight? The decision will not turn on the potential for new science, rather it will be about supporting and maintaining a flagship industry.