To understand the future of American downtowns after the pandemic, do a little experiment. If you live in an apartment, is there a place in it that is more than 30 feet from a window? Odds are there isn’t. That simple rule—that no space in an apartment, whether by code or by custom, be more than 30 feet from a window—is the key to figuring out what happens to America’s office buildings if no one wants to come back to work. Advertisement That’s far from a given. Expectations about the staying power of remote work may change dramatically once pandemic public health restrictions are li...