So one of you is wrong and one is right , unless you can both be both right and wrong at same time?
"Using a quantum computer, researchers at the information-technology giant had carried out in a smidgen over three minutes a calculation that would take Summit, the world’s current-best classical supercomputer, 10,000 years to execute."
My first thought was to wonder about the impact of QC on the backtesting of complex strategies with multiple inputs and large ranges of values for the inputs. Would welcome thoughts of those with more experience in this area...