Matt Arnold was wrongly accused of shoplifting at Sainsbury's in London after an artificial intelligence error. He was subsequently ejected from the store, but says the experience was unpleasant and distressing, but could give a dark outlook for the future. Sneaking in to buy food and drinksArnold is a comedian. He sneaked into Sainsbury's in East Dulwich, southeast London, on August 6 to get food and drinks for a stand-up show he was doing next…