Whenever you make rules, you define some region of acceptability that's recommended and then if people go too far from that region, you say that's against the rules. The boundary is set some distance from what's recommended. You don't set the number at exactly recommended because people working in good faith still sometimes have honest reasons they need to go past that. But then you get bad faith actors going to the limit too.
If you don't have a good reason not to play it safe during a pandemic, then play it safe. Otherwise, screw you. Just because the law lets you be a dick, doesn't mean it's okay.
In order to say "that's against the rules" but allow some leeway, you need it to be under-specified so you can enforce it selectively.
But the next part suggest you over-set the norm, so people with honest reasons can go beyond the ideal without breaking the rules and everyone has an moral duty to stay well within the specified norms.
Anyone who brings a large group of people together for frivolous reasons or without taking precautions is being unethical.
What's a large group? It's like porn - you know it when you see it.
Those without sufficient information shouldn't be making these moral gambles to begin with.
If there is a buck to be made, who am I to not make it??? "Common sense"? I got bills to pay!
Starving has a 100 percent mortality rate.
These kinds of medical judgments on viral epidemics are exactly where we want the government to communicate clear vision and leadership on emergency medical policy...
The clicker is effective for fire code issues (since you want to make sure X people aren't in the building) but for disease related issues you don't want those people gathering anywhere, and now 1000+ people will have been gathering (at various times of the night) just outside the venue because of the event.
At the end of the day you have to set the threshold somewhere. One could argue that a 500-person event is still risky, but a balance has to be struck between attempting to slow the spread of the disease, and not unreasonably restricting people's activities.
In this case, what's reasonable is certainly up for debate. No measure will be perfect, unless we want to start advocating for no gatherings whatsoever (public or private) and effectively putting people under house arrest. While that would stop transmission of the disease, I think it's fairly uncontroversial to say that would be an overreaction. But certainly it's up for debate as to, say, whether a 100-person ban would be appropriate, vs. 1,000, 10,000, etc. They chose 1,000. It won't be a perfect number, but it will help.
It also ignores the intention of the rule, which is to reduce unnecessary risk. If 1001 people in a single venue is dangerous, so is 999.
I imagine a function using things like transmission vector diffusion rate, windspeed, incubation period, critical care percentage, number of ICU beds, and such as parameters, and outputs the maximum allowable gathering size that will keep the spread slow enough that everyone who requires hospital recovery can get admitted. Public officials could then ban public gatherings greater than 80% of that number.
Seems like a paper describing it could be worth some academia brownie points.
I think it's fairly uncontroversial to say that we absolutely do need a quarantine that keeps almost everyone in their homes, except for those providing critical services (medical staff, police, national guard, plus some needed amount of infrastructure for groceries, pharmacies, electricity, water, etc.). For the next 2 or 3 months, I fully expect to only leave home maybe every few days or week to go to the grocery store or pharmacy, like you see today in most of South Korea. It's just a question of when at this point, and the sooner we start it, the less disruptive it'll be in the long term and the fewer people will die.
So you're right, of course.
And can you id some such events? I think the 'organizers' need to feel some pushback for their lack of responsibility.