Been thinking abouy #2.
Here in DK we shut down hard in March and brought the R0 back down under 1, actually to 0.7 per the estimates (this week estimating last week, always). After about a month we start to open up a few things, right around that time we learn that the R0 has crept back up to 0.9, why? No one had an explanation. Anyway, the bits that should open up opened, (kindergarten and school up to 5th grade). The government had chosen the stuff they were advised had the least risk. All trends, cases, hospitalizations, ICU beds, ventilators, deaths keep dropping and there is more thought put into what's more dangerous and what's dangerous. Political negotiations ensue, a second batch of stuff is opened (social distancing is maintained through it all). In the mean time, the R0 has dropped back down to 0.7, despite the kids going back to school.
So, what I think is going on is that we are still learning where and how this disease spreads. And that we are using what we learn to hypothesize on steps forward, and learning from that.
Hopefully, with all the different approaches to closing down and opening back up we'll learn how to live with covid-19 until we have a vaccine, well knowing that this may take awhile, and likely that there will be setbacks.
I don't think this will be a sprint, this will be at least a 5K if not more, and that YMMV, what works in Denmark may not work in India or the US or Brazil but that doesn't mean we can't learn from each other because knowledge and science will get us through this better than conjecture and feelings.