private jets already solve these problems.

Which already is a bad signal for the article's argument. We already have a way to significantly reduce that travel time and it's a niche.

Could Boom Supersonic or whoever actually survive selling only to a hundred Taylor Swifts? How are they going to keep the lights on for the 30 years those jets fully saturate the market?

But for the private jet market, the reduction would be huge. They're already paying a premium to save time. The top end will pay an even larger premium to save even more time.

I agree with you that for commercial, anything other than super long haul (which is technically very hard), the time saving advantages are much less compelling.

sometimes not nearly so pleasant for them.

During the French Revolution, they tried to make a right angle have 100 degrees and even recomputed all new trig tables for this new standard. It obviously did not catch on :)

https://en.wikipedia.org/wiki/Gradian

There's no reason you can't have 400 degrees in a circle and therefore 100 for a right angle.

It's a degree scale: you can choose any number you want.

Indeed, gradiens are a scale where a circle is divided into 400 equal parts. Really fucked me up a few times when I got a new calculator and wasn’t paying attention to what the little “grad” meant.

But I can't subdivide 400 in to as many ways as 360. Think about the pie industry. They could be put out of business!!

I usually want to cut pies into 14 pieces. Some might want 11 or 13. (17 is just too many.) I demand that we implement a system where a circle is 2 * 3 * 4 * 5 * 7 * 3 * 11 * 13 = 360360 degrees, so that we can cut pies evenly at anywhere from 2 to 15 slices. If my baker cuts a slice at 25739 degrees, I want a refund! (I'll keep the pie, because the pie is obviously useless.)

(720720 might be OK too so we can cut 16 pieces, but honestly, if you're cutting 16 pieces, you're not going to measure. You're just going to divide pieces in half until you have 16. 360360 is the future.)

Of course that's true, that doesn't mean you should.

The Indiana pi bill mandated certain mathematical values be changed to the wrong value.

https://en.wikipedia.org/wiki/Indiana_pi_bill

“The bill, written by a physician and an amateur mathematician, never became law.”

Some pocket calculators from not too long ago supported this unit for some reason, along with radians and degrees. That's the third option on "DRG" button.

Whenever I'm late to a meeting I blame it on the french revolutionary calendar.

Lousy Smarch weather

Google has the revenue to cover their spending and then some.

Is V1 recalculated based on the runway length at each airport / loading of the plane / etc.?

If you have a long runway and a long runout, you have a much higher V1 than a short runway with tall clearance right at the end, right?

Yes

No, but being short is completely disqualifying, so being tall is certainly a component of the physical traits that make you good at basketball. If you're 5'2" , it doesn't matter what other gifts you have -- you will not be a pro male basketball player today.

In tennis, being too tall is clearly net bad, but being too short is also definitely bad. 80% of male pro tennis players are 5'10" - 6'4", which is certainly not the statistics of the general population.

and all sorts of situations where they don't work. When they do work it's great, but if they don't and you rely on them, you have nothing.

Oh yeah, using all available data channels in proportion to their cost and utility is the right choice, 100%.

1. There's still overall fewer infections from high risk HPV types in these women.

2. It needs to be confirmed in ~10 years, but it seems very likely that women given the shots that protect against all high risk HPV types will see almost no infections from them.

leapfrog!