Many years ago, a discrepancy was found between the experimentally measured value of the muon magnetic moment, and the theoretically calculated value. Shockingly, most physicists were blase about it. It was no big deal to them. They dismissed it as either an experimental error, or some mistake in the QCD calculations, even though error bars have been painstakingly computed for both of them, and the discrepency still survived up to a few sigmas.
What is the current status of the anomalous muon magnetic moment?