[colinsane]

of the things you list, the school schedule is the most hard and fast thing. for everything else you mention, you're presented with a window where so long as you can make _some_ time within that window you're fine. is shifting the window an hour in either direction really all that consequential? already there's enough variance in typical day jobs and eating habits that you and i probably differ by an hour and are still able to make it to hospitals, courts, airports, etc.

do we adjust school start times today? yes: if you've ever experienced two schools consolidating, or just demographic shifts in the areas being served by a school, it's not uncommon for start times to change. so regardless of how we coordinate at the whole-society level, we'll still do more granular coordination at the workplace, school, and community levels. IMO that outermost layer of coordination really just needs to provide stability, with the more local layers coordinating the finer details. and for many of us, DST is perceived as disrupting that stability: it feels like more of a hindrance to coordination than an aid for it.