The Afshar experiment is an optical experiment, devised and carried out by Shahriar Afshar in 2004, which investigates the principle of complementarity in quantum mechanics. The result of the experiment, that a grid of wires can be ignored when both slits are open, is in accordance with the standard predictions of quantum mechanics; however, it is controversially claimed to violate complementarity and specifically the Englert–Greenberger duality relation; others disagree.
Read more about Afshar Experiment: Overview, History, Experimental Setup, Interpretation, Specific Critiques
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“Mathematics alone make us feel the limits of our intelligence. For we can always suppose in the case of an experiment that it is inexplicable because we don’t happen to have all the data. In mathematics we have all the data ... and yet we don’t understand. We always come back to the contemplation of our human wretchedness. What force is in relation to our will, the impenetrable opacity of mathematics is in relation to our intelligence.”
—Simone Weil (1909–1943)