Luís M. A. Bettencourt
speaker
816 appearances
1 recordings
1 series
first heard Jul 2026
last heard 27 Jul
Luís M. A. Bettencourt’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.
Appearances
So in a city, if you go to a city that's just developing, that's just building its infrastructure, it has local streets, but it doesn't have the highways yet.
So movement is very slow.
So in order for the city to stay connected, you have to build these ways in which you can move faster across the city.
Okay.
When you put all that together, you create a parallel circuit that gives you a different resistance.
The cost of movement is no longer a constant.
It's now reduced, actually, because of this infrastructure.
And that ends up giving you the one-sixth number.
That's magic.
So it takes a little bit of calculation, but that's basically observable.
There's an experiment I always tell my students to do, which is very special.
What this predicts is the following.
If you fly over a city, we all fly over a city at some point probably, right?
And you look down, you will see the little streets, the local streets, and you'll see the highways, right?
Obviously.
And you see the ones in between.
What all this predicts is that the density of traffic, so you could see number of cars per unit space, in a small street is smaller.
There are fewer cars per unit of space.
The highways are occupied more densely.
Not always, but when they're occupied, you see.
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