I remember reading in some book, that the most important experiments are those that produce negative results: the Michelson-Morley experiment for example. The standard model is complete after the Higgs boson. I believe that if no new particle appears in CERN, it would be one of the greatest revolutions in physics. I seem to have read also, that Michelson died still believing in the Ether. Experimental data today: no new fundamental particles at CERN I hope that thinking were not sin.