Update (24 March 2021): The Large Hadron Collider beauty (LHCb) experiment is still insisting there's a flaw in our best model of particle physics. As explained below, previous results comparing the collider's data with what we might expect from the Standard Model threw up a curious discrepancy by around 3 standard deviations, but we needed a lot more information to be confident it truly reflected something new in physics. Newly released data have now pushed us closer to that confidence, putting the results at 3.1 sigma; there's still a 1 in 1,000 possibility that what we're seeing is the result...