Comment by Jizzle

I'm under the impression that the reason we couldn't confirm the Higgs boson before the LHC was that electron-positron colliders could not easily produce the massive particles needed. Proton-proton or Proton-antiproton collisions seem to be much more useful for Higgs production. The Large Electron–Positron Collider almost got us there and it exceeded 200 GeV. What then would a 250 GeV machine do for us?