So many commenters here and in the OP on Reddit are asking "Why is anyone flying?"

I understand the question, but to understand the answer, you need to consider the scale of the pandemic.

1/ https://twitter.com/doctorow/status/1259335575586271233
Let's say you (reasonably) assume that an issue that is urgent enough to warrant a flight arises 0.1% of the time. In America, that means 3,000,000 people have issues of sufficient urgency...every day.

2/
Just keep playing with that number: 1 in a million? 30,000 people. Per day.

As it happens, we had a socially distanced farewell picnic with a friend who is moving back to London from LA last night (two blankets, two meters apart).

3/
Their circumstances are incredibly complicated and also personal, so I won't explain them here, but basically, it's a combination of a string of really bad, rare beats and the alternative (staying here) is neither physically safer nor psychologically healthier.

4/
The coronavirus has affected ~7B lives. That means that seven ONE-IN-A-BILLION problems are cropping up every day.

It's also important to keep this scale issue in mind when hearing good and bad news about covid.

5/
As a planet, we're finally doing a TON of testing (not so much in the USA or UK, but...). That means that super-rare test failure modes will crop up a lot. Like the incredibly rare cross-contamination of three consecutive tests that deliver false positive or negatives.

6/
Or the incredibly unlikely circumstance in which two people in close quarters, one of whom is sick, fails to infect the other.

7/
It's worth looking closely at these things to see what's going on there, but their mere existence could just be the kind of odd coincidence that crops up when you flip a coin 7 billion times every day.

8/
Like, maybe that person who didn't get covid from their spouse despite their intense eyeball-licking kink means that we've discovered someone with natural immunity whose plasma will save us all, or...

9/
Maybe they just got incredibly, amazingly, wildly lucky. Or maybe they just had the incredible BAD luck to have a succession of false-negative results from their tests.

10/
It's REALLY unlikely that you'll have several false negatives, and it's really unlikely that you could indulge an eyeball-licking kink without transmission, but it's a big, weird world.

11/
Flip a coin enough times and it will land heads 50 times in a row. Or land on edge 50 times in a row. We're doing a LOT of coin-tosses, is what I'm saying, and so NOT seeing highly improbable outcomes is even more improbable than the outcomes themselves.

eof/
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