Name: レーンの呪い8 -ナンバーマニア (The Curse of Lane 8 - Numberphile)
Uploaded: 2021-01-14T10:33:18.000Z
Duration: 9 min 53 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

And so the whole thing is, it's like our drag racing.

And let's get going really fast, hold the lead and then carried on through to to to the end.

So what you do is you get three opportunities to advance.

Some other organization have different rules.

When I'm talking about a B a American bicycle association, you have eight lanes on a track.

And to advance into the next round, you had to win one of the motives.

Okay, that means so you get into the first Moto and usually a very good writer would win it.

He or she would sit down and then the other seven riders who were going to the second Moto, Then whoever won that would sit down.

Then there'd be 1/3 Moto for the third writer.

Then those three riders would advance into the next level of competition, and a big meeting could be a finalist.

Okay, so the big issue is to get out of the first round.

It's like in basketball getting past the first round of the playoffs.

There's eight riders, and so you have eight lanes in Lane eight has always called the one that is part of this from where you turned.

So if you turn left, this would be laying eight.

If you turn right, this would be lady thing outside Lane, you have to travel further.

If all riders were equally talented, you wouldn't win out of lady if they all fell down or if something happened, somebody new.

But in general, assuming that all writers are equally, the chances of winning are Delaney are very slim.

A lot of people watching might have seen the Olympic Games or running races where we sea staggered lanes.

Or we could have a tilted line like an angled start.

Like BMX racing doesn't compensate in this way.

If you could keep people in their lanes, you know, like you do in track, you say you have to stay for the first lap in your lane.

And what happens if you ever try to do that?

Okay, we're just, In other words, if somebody was in front and they saw somebody started to pass him.

They would just move in front of them and knocked him down.

So you can't give someone an opportunity to be in front of somebody else because we'll move it out and it's gone.

Years and years ago, when my son started racing, everybody just rushed the gate and noticed that Lane eight Outside is no good and Lane one inside.

It's too easy to get so somebody to cut you off for somebody to get boxed in.

So good Leans are usually 234 maybe in an extreme case five.

In the early days, people would rush to the track when they said, We're going Okay, let's start the racing and they'd run and get into 33 or four.

Okay, What we're gonna do is we're gonna call these rain at random, thought you'd have a deck of cards and they have eight and you just pull the card and that was your link, or they haven't earned with balls in it.

And you put one And at least that was fair in the sense that, you know, you had equally likely chance to get anyone of the lanes.

So that's how it went on for years and years and years at the start of each moto.

Remember, we have three motor, so you have a random draws the starter motor one random draw it to start a motor, too.

Now the problem Waas that with that random wrong, there's a reasonably likely chance that you could pull 38 And if you are off somewhere like my son ones was.

We were in Shreveport, Louisiana, and he proved 38 Well, he'd road gallantly, okay, but he still didn't qualify into the next round.

So I said, We need a better system we need on where my son can't get 3/8 or to eight and a seven.

Ah, colleague of mine who's a statistician?

We just started talking and said, Let's fix this, Okay?

There were two breakthroughs OK to break through.

The first breakthrough was that's not a sign a lane independently, three times.

That's instead give you a triple, and your triple would have three numbers.

Let's say it had 158 That means you get Lane one in the first Moto Lane, five in the second at eight and and he was another major breakthrough.

Instead of working mathematically with the numbers of the lanes like one and two and three, we decided to work with the priorities.

Okay, one meant the best link to meant the second best and eight and the worst that has mathematical content.

So we put mathematical meaning into it by saying priorities.

Those two breakthroughs, triples and priorities.

So what you do is you asked a bunch of good writers.

Almost if you had to say anything and almost always be laying three sometimes before maybe, but it was almost a saint, which were the worst, everybody would say eight.

So maybe there's some fuzziness in between, but almost all the good writers would tell you the same thing.

Was that Was that some kind of survey or pole?

Every time I did it with my son and his friends and they thought that that, you know, sometimes it was the right answer in a wrong answer.

So now I had to build a mathematical model that says how I'm going to come up with the very best set of eight triples.

There will be the fairest, and then run it on the computer with an elegant Give us the best.

And what we did is we try to say, Look, everybody should have the same.

You know, if you summed up priorities like maybe the priorities, like 158 as I said before and you sum them, you're gonna get 14.

Well, maybe everybody should have the same sum of priorities.

So you know, you start playing mathematical games about ST A model so soon you start to realize that the best solution is gonna have 4 13 and 4 14 So that's already cutting the data back a lot.

You see, it's already saying, Oh, now I don't have to search everything.

And so with that constraint that four are going to be 13 and four, we're gonna be 14.

You start to do a search, comes ah, situation where you get these optimal eight triples in less than one second, we found 7000 solutions.

Okay, so so But that's too many solutions.