[mehrdadn]

> I am aware of no data that some of the business activities [...] are the major drivers of transmission

This suggests he is aware of data indicating that some of the business activities being restricted drive transmission, just not all of them. (I'm guessing maybe, say, indoor dining?) So should those known to do this be restricted or not? Did restricting them previously help or not? Should we ignore them?

[chipotle_coyote]

It seems to be fairly well established at this point that poor ventilation is an issue; spending time around others who may be carrying the virus is an issue; wearing a mask, whether inside or outside, significantly reduces the chance of spreading the virus if you're a carrier. So your guess seems pretty on point. Indoor dining/drinking means being around others without masks in areas where air is circulated rather than fully exchanged, so it's about as risky as you can get short of a church service or choir practice (which has all of those risks but adds "let's project particles from deep in our lungs while singing"). "Spreading events" under those conditions have been pretty well-documented, as far as I know.

So, I'd say Dr. Morrow is aware that some of the restricted business activities drive transmission and he's supporting those restrictions. There are other activities -- like outdoor dining, as long as you're not putting diners in circulation-restricting tents -- that seem to be lower risk, and could probably further mitigate risks by having limitations on group size, dining time, etc., rather than just a point-blank ban. And there are some other restrictions which just seem more like theatre, such as curfews. Do we think coronavirus is nocturnal?

> Should we ignore them, then?

I'm not sure how useful that question is for folks who don't run businesses facing that decision. If I was a restaurant operator, I wouldn't flagrantly flout the local regulations even if I disagreed with them. I'm not, though, and the restrictions that more directly apply to me as a citizen -- e.g., try to stay at home during this surge, don't gather in groups even with folks in your "quarantine bubble" -- don't seem that wildly unreasonable.

[wwweston]

> And there are some other restrictions which just seem more like theatre, such as curfews. Do we think coronavirus is nocturnal?

The way I've heard some people explain it is that human behavior changes nocturnaly. After 10pm what are most people doing out? Nightlife and drinking overlap pretty heavily, social drinking and social distancing are kindof contradictory, and alcohol isn't known for increasing people's capacity for conscientious observance of safety practices.

[tshaddox]

Or, even simpler: less time in the day for interactions means less interaction.

[bsder]

> as long as you're not putting diners in circulation-restricting tents

The problem is that this is EXACTLY what they are doing.

One mexican restaurant near me has a nice parking lot that they converted to outdoor dining. Yes!

And then put a tent up with heaters under it because it got "cold". ARRRRGH!!!!!!

[ketzo]

As long as it’s an actual tent, with open sides, it’s a pretty huge improvement. I don’t have the link, but I read that basically anything outdoors with open sides might as well be totally outdoors, since the heat created in the tent will naturally cause the air to be exchanged constantly (plus, obviously, the breeze).

[chipotle_coyote]

Oh, sure, I've seen it too, which is why I had to add that caveat. "Yes, outdoor dining is much safer!" "..uh, maybe not like that."

[gnopgnip]

A significant number of people are going to restaurants outdoors with other people from outside their household. This is more common after 10pm. So in a vacuum these activities could be done safely, but in practice they contribute to the spread of covid