dhw: Ignorant though I am, I do understand what the LHC is looking for (and so far failing to discover). I also understand that the Higgs boson completes one particular segment of the great jigsaw puzzle of our universe, but there are many other pieces that are still missing, which is why various websites insist that the standard model is not complete (or is “circumscribed” as you now put it).-One more try. I understand what you understand, BUT, we don't know what were missing. That is my point. We are in a new discovery phase. Strings, membranes, supersymmetry, etc. all unproven.