Business Here’s what we do and don’t know about the effects of remote work Three years into a mass workplace experiment, we are beginning to understand more about how work from home is reshaping workers’ lives and the economy. A new hybrid work environment has made profound but still puzzling changes in both the cities and the suburbs. Haruka Sakaguchi / The New York Times When workplaces are remade by a tectonic shift — women flooding into the workforce, the rise of computing — it typically takes some time for economists, psychologists, sociologists and other scholars to gather data on…