There's a windchill of -40 degrees here in Chicago right now, part of a massive freeze that has set in across most of the United States. The cold forced my youngest child back into Zoom school for the day and overhearing his teacher beg for them to mute themselves while he laughs and jokes with friends has been a flashback to the time in the pandemic when everyone was doing everything at home. It's been weird and slightly traumatizing, but also sort of pleasant, and mostly has me thinking abo...