Re: Ventilators: "You need millions of them, tens of millions..."
You like numbers, but got some of them wrong, and missed others.
As stated earlier, folks in ICUs are requiring on the order of 14 days, not 6 (or 4). So for the sake of thumbnailing, your worst-case scenario would require twice the number of beds, or roughly 5.2 million beds (and about 2.2 million for your best case estimate).
Now a large percentage of those patients need ventilators to stay alive. I do not have those numbers (maybe you do?), but if 80% of them did, that would be up to roughly 4 million ventilators needed in your worst-case scenario. Not the "tens of millions" that the original poster hyperbolically stated, but millions (plural) nonetheless.
Not sure I get the point of your post. Was it to shoot down the "tens of millions" point? OK, point taken; "tens of millions" is likely overstating the point. But your own numbers seem to indicate that millions is not overstating the point, and when our Douchebag-in Chief is squabbling over "40,000 or 30,000 ventilators", it is clear from your numbers that His Royal Hinie's concern is off by several orders of magnitude.