Lokasenna
Posts: 9297
Joined: 3/3/2012 From: Iowan in MD/DC Status: offline
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quote:
ORIGINAL: Sammy5IsAlive quote:
ORIGINAL: RFalvo69 Let's run a simple simulation, shall we? One valid for the Western World in a general sense. 1. You (with this meaning "a general guy") open shop again (let's say it is a shop for simplicity). You are infected but asymptomatic. After a few days a percentage of your customers fall ill. Some tracking is done and the cluster is centered around your shop. You lose all your customers, you have to close shop and, according to the laws of your country, possibly become target of a score of lawsuits (God forbids that a customer's elderly in-laws got the virus via you). In any case, your activity is, "de facto", wiped out. 2. But wait, it gets better! You are not a carrier and everything is fine. But your neighbour is. Some of his/her customers get infected and, since they are doing a shopping round, they come to you next. Soon or later you get infected. Go to 1. 3. Amazingly enough, it gets even more better! After a while people start to realise how all this "we want our liberties back!!" brouhaha is creating hot spots in shopping areas - not somewhere you want to be. People stop shopping again, discover that the new freedom cry is "Give me liberty AND death!", and all economic activity returns back to zero - but with more people infected (and an higher strain on the healthcare infrastructure, as intelligently noted). 4. A nice ribbon to tie it all. Next time you declare how "The Coronavirus emergency is over, no really this time it is, we want our economy back!!!1 (sic)" people will be much more wary and the economy restarts in fits and coughs because (to use an Italian idiomatic form) you burned your word. And this if mortar and brick business still exists and Amazon hasn't bought the World. Simulation ended. Do you want to risk this? (because, admittedly, this is not a given - only a model of what could happen if the coin drops with the wrong face up) Maybe you don't agree with this simulation in the first place? Fine. Break the model. We are in a wargaming forum and this is a wargame of sorts: it should be fun! Just show me where it is wrong. The rest it hot air. Neither European countries or the USA can afford to stay in lockdown until we have a vaccine or even 'universal' testing. So at some point we are going to have to get used to a situation where we may indeed be asymptomatic carriers but have started living our lives more normally because that is what the situation demands. It's about managing risks. I don't think anybody here is arguing that we should now just 'go back to normal'. Similarly I think most people appreciate that we can't just carry on like this indefinitely. There may be differences of opinion in terms of the extent of 'normal' that we will be returning to and how long that will last - but that is because at the moment we are dealing with a massive information deficit because nobody really knows how many people have actually been infected. If it is a high proportion we might find ourselves able to go back to 'normal' quicker than expected. If it a low proportion and closer to the reported cases then we probably won't be able to go back to normal till a vaccine is ready. In that situation the challenge is to find the right balance between full lockdowns and full normality. From https://nymag.com/intelligencer/2020/04/we-are-probably-only-a-tenth-of-the-way-through-the-pandemic.html, emphasis mine: quote:
But getting out of the lockdown — and out of your shelter-in-place bunker — is not the beginning of the end of the pandemic. It is only the end of the beginning — the very brief beginning of what seems likely to be an epically long saga of disease, fear, and uncertainty. ... There are, practically speaking, three paths out of the coronavirus crisis, to a way of life that resembles the one interrupted by COVID-19. The first is a vaccine. The second is effective treatment for the sick — not just effective at the margin, but so effective that catching the disease becomes a considerably less worrisome prospect for even those with comorbidities. The third is through herd immunity, when enough of the population has acquired COVID-19 antibodies that even with a return to “normal” life, there wouldn’t be enough opportunities for disease transmission for the virus to continue circulating through the population. ... Here are the timelines for each of the three. The most optimistic projection for vaccines is that they begin to be available this fall; other reputable estimates suggest between one and two years from now. A two-year development cycle would be unprecedented speed for any vaccine, and, while scientists are quite optimistic, no vaccine has ever been developed for a coronavirus before; onto each timeline you’d have to add some amount of time for rollout and administration. ... That leaves herd immunity. Epidemiologists tell us it requires between 60 to 80 percent of the population to have antibodies. At the moment, though, lack of testing means we don’t have a clear picture of the spread of the disease; a generous rough estimate for how many Americans have been exposed is 5 percent. While there are some reasons to hope that the exposure could be significantly higher, 5 percent would be more than ten times higher than the number of known cases, and would be in line with large-scale serological surveys in Holland (where the disease has been relatively widespread), suggesting that 3 percent of the population had antibodies. Others projections suggest that the U.K. is only 5 to 6 percent through the course of its pandemic, and recent models estimate an immunity level of about 6 percent across seven European countries. And it means, taking that generous figure for disease exposure and the low-end threshold for herd immunity, we would need 12 times more exposure than we’ve had to this point — in other words, that we are only one-12th of the way through this crisis. That may sound bleak, and there are some indications that the population spread could be much more broad. But assuming no wild underestimate of total asymptomatic cases, one-12th of the way through the crisis is a very optimistic projection, if not quite a best-case scenario. It is possible that even less of the public has been exposed — perhaps one percent or lower. At that level of exposure, we could be only one-80th of the way through the pandemic, requiring 80 times more infection and exposure to attain herd immunity than we have had to this point. Now, disease spread is not linear, which means 80 times more exposure doesn’t necessarily mean the pandemic has to last 80 times as long as it already has. But it does mean, probably, that to reach herd immunity many, many more people will have to get sick — some of those very sick, and some of those lethally so — before we find ourselves, in any meaningful way, in the clear. More good points if you follow the link.
< Message edited by Lokasenna -- 4/17/2020 8:00:19 PM >
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