Like most new inventions, after the fact, the Instant Pot might seem like a mere technological accomplishment. Why couldn’t socialist planners mobilize scientists and do the same thing? Like millions of Americans, newly elected New York democratic socialist congresswoman Alexandria Ocasio-Cortez loves the Instant Pot multicooker. She has been having Instagram Live conversations about politics while she cooks with her Instant Pot. In November, Ocasio-Cortez asked her 1.2 million Twitter followers to post their favorite Instant Pot recipes. Perhaps she should ask her Twitter followers to explain to her how markets work to produce innovations like Instant Pots. There are...