I'll quote this bit first because it's the happier part of the conversation.

We are doing surprisingly well here. New infection rates are down to around 2% per day, compared to about 20-25% a few weeks ago. That was the time when I and many other Australians were flying in from overseas, and the majority of Australians who have been diagnosed with Covid-19 have in fact contracted it overseas, mostly in Europe and the US. Our community transmission rate remains low, but we are going to need at least several more months of tight social distancing restrictions, probably followed by a prolonged period with closed borders, to ensure that remains the case. Which brings me to...
Let me paint you just such a scenario.
I'll start by acknowledging the truth above: families *will* be eager to get out of their homes and go somewhere. For what it's worth, that's not only Americans, it's all of us (me included!) and it's not only Americans who don't like being told what to do either. But for a variety of reasons, I do agree that America is more likely to be 'opened up' by June than other comparable countries. So let me explain why:
a) that's a really frigging awful idea; and,
b) it can't last.
First, let's be clear that because of USA's federal structure with highly independent (and politically very different) states, there won't be a single point in time where the entire country 'opens' at once. The most important and probably loudest voice calling for a swift return to normal is the President, but he doesn't actually have most of the power in this situation, it's state governors. So while some Republican governors might heed Donald Trump's demands to get the economy moving again, Democratic ones are far less likely to listen to him. As such, I'm going to paint our scenario in a state where the governor has already shown a tendency to view coronavirus in the same way that Trump has.
Let's say... Florida. Apart from being a state that's more likely than most to open up too soon, it's also a state where the time frame - opening things up at the beginning of June - makes a bit of sense. Florida's (first) 'peak' is coming quite soon. They have already had a horrible few weeks, with at least 460 deaths, but they also have over 19,000 known active cases: it's not an exaggeration to say that thousands of people are likely to die in Florida over the next few weeks, but by the end of May - seven weeks from now - the daily infection rate and death toll is likely to be falling, not still increasing. So Governor Ron DeSantis might think it's safe for people to leave the house.
It's going to take a little bit of math to explain why he would be very wrong to do that.
See, even if the daily number of new infections are going *down*, in the short term that doesn't necessarily mean the virus is starting to go away. You might have heard of something called the 'R' number, which in simple terms is the number of other people that each person who has coronavirus infects with the virus. If the virus has an R number of 1.0, then every person who gets the virus will infect on average one other person. If the R number is anywhere above 1.0 - whether that's 5, or 3, or even only 1.1, then the outbreak is still growing. It's only when the R number is below 1.0 that the virus will start to die out, and it's only if the R number gets down to zero that the virus will be extinct (which, I'm afraid, will never happen without a very effective, widely used vaccine).
The higher the R number is above 1, the more contagious it is. Obviously Covid-19 is a new disease and so there's still a degree of uncertainty about precisely what the 'natural' R number would be without any social distancing, but the most common estimate is that it's around 2. In other words, if we just go back to living our lives they way we were five weeks ago, every person who gets coronavirus would infect an average of two other people.
That might not sound like a lot, but it really is. To see why, take a calculator and hit 2 x 2: you'll get the number 4, which is about how many people have gotten the coronavirus after a week or so. Then hit 'x 2' again, and then again: after two weeks, you have 16 people. Now do it another four times: after four weeks, that one infection has become hundreds and hundreds of people. After a second month, we're talking about hundreds of thousands. This is why we've all been stuck in our homes: not because of the hundreds of thousands of people who already have it, but because of the hundreds of millions of people who will get it if we don't.
The whole point of closing everything and staying indoors is to get that R number down below 1. As a general rule, the more we stay distant from each other the further the R number will fall. If every single one of us managed to stay 'perfectly' socially distant, by not touching anything or going within a few metres of anybody else for a couple of weeks, we could get the R number down to zero and all this would be over. Unfortunately that's just not possible, so we're stuck trying to achieve just enough social distancing so that we can get the number below one. Once we do that, we can start doing more and more testing to try to at least find everybody who has the virus and just isolate them, rather than all of us.
The simple, unfortunate truth is that though we are getting there - I saw a report earlier today that estimated Ohio, one of the states that is handling this better than most, could have their R number down to 1.2 - we aren't there yet. Effectively, Ohio has slowed the spread, but they haven't stopped it.
What that means is that if we start to remove the social distancing restrictions now, the numbers will start to go back up very quickly.
Of course, Florida Governor Ron DeSantis probably isn't *quite* as dumb as I think he could be, so he probably won't *entirely* remove restrictions. He might let Zoo Miami open, for instance, but say they can only have 1000 people visit per day, or something similar. Maybe they let people go to the beach, but they keep the change rooms closed. Things like that. The R number isn't likely to get back to the natural rate of 2.0, but it won't stay below 1.0, either. For simplicity, let's assume that Florida's restrictions allow the virus to have an R number of 1.5: for every two people who have the virus, another three will catch it.
So the R number is one part of this puzzle. The other is the number of cases in the community. Unfortunately, we don't actually know how many cases there are, but we know there's many, many more than the official statistics show, because America isn't doing much testing for the size of its population. I saw one report today that said that 20% of all people in New York who *are* tested have the virus, but nobody really knows how many people there are who have the virus and are contagious, but have either minor symptoms or no symptoms and thus never get diagnosed.
I'm going to be very, very kind to Florida and guess that at the time DeSantis opens things up at the beginning of June there is 'only' 100 people in Florida who have the virus and aren't in quarantine. It's likely to be many more than that, but bear with me.
So it's June 1 and Zoo Miami is back open! So are all the other zoos, movie theatres, golf courses, beaches and even Disney World. Donald Trump is thrilled at the good news and promptly flies Air Force One down to Palm Beach for a campaign rally and a quick visit to Mar-e-Lago. Florida is back in business.
The question is, where are those 100 people who aren't in quarantine? Maybe one of them attends that Trump rally, where they infect everybody around them with something even more toxic than right-wing grievance politics. Maybe one of them works at Disney World and spends their days handing visitors hot dogs. Maybe some of them are still worried about the virus and do their best to stay out of crowded places: lots and lots of people are still going to be too scared to go out.
Either way, we already know there's an R number of 1.5. Maybe the Disney World employee infects 15 people and nine others stay at home and don't infect anybody, but however it works, those 100 people infect another 150 in the first few days after Florida opens up.
Then another few days pass, and those 150 people infect 225 more. It'll take about two weeks for any of those 150 people to start to have symptoms, and likely a couple of weeks more before the numbers make it clear that Florida's outbreak is out of control again. By the end of the month, those original 100 people have made perhaps 2000 people sick. After another month, those 2000 people have made another 24,000 or so people sick. It's only at about that time - early August - that any of those 100 people who *did* become badly sick will die. It's not until September that Florida hospitals start to send people home to die because they still don't have enough ventilators.
Of course, Florida's decision doesn't only hurt Florida. As you say, many families are just *desperate* to get out of the house, and Florida's a popular and seemingly safe destination. Some of the people that the Disney World hot dog salesperson infected might have come from Chicago, and they didn't know they were infected until long after they got off the plane. Or maybe they thought they'd be careful and drove to Orlando and back, so they wouldn't sit in a germ-filled plane. Meanwhile, at the Trump rally, an infected person coughed just a little too close to a Secret Service agent as they jostled for a good view of the President. Suddenly Florida's decision has caused cases in Chicago, Washington DC and a gas station or hotel room on the road from Orlando. By the time DeSantis realises that he's made a terrible mistake and closes Disney World and Zoo Miami again, it's too late.
Until and unless we have the case number so low that we literally know of every single case, this is what will happen if we remove the social distancing restrictions.
So yes, you're right: maybe Americans will get impatient and maybe politicians will give into their demands to open the zoos: it is, after all, an election year. But open too soon and they're just going to close again, with more dead people, with more lost jobs, with more pain and suffering before this is all over.
There are no shortcuts. The virus
doesn't care if we are bored and want to go to the zoo, but if it *was* capable of caring it'd probably be very happy, because it needs us to get out and about to survive. This is essentially a very long, very frustrating staring contest: if we blink first, the virus wins.