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← No dense city anywhere runs without heavy reliance on transit, and no…
17 connected korrents · 13 moments on record from 3 Nov 2008 to 19 Aug 2026.
Everything filed under energy
energy
Everything filed under self-driving cars
self-driving cars
Everything filed under nuclear power
nuclear power Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: No dense city anywhere runs without heavy reliance on transit, and no new transport technology changes the space arithmetic that makes that true. No dense city anywhere runs without heavy reliance on transit, and no new transport technology changes the space arithmetic that makes that true. Last stated 12 years ago
4 Nov 2014
JW
Jarrett Walker — holds since 2014-11-04 — tap for who they are
Same subject: Replacing big transit vehicles with small ones puts more vehicles on the street to move the same people, which is the one thing a dense city has no room for. — tap to centre the map on it Replacing big transit vehicles with small ones puts more vehicles on the street to move the same people, which is the one thing a dense city has no room for. Last stated 10 years ago
21 Jul 2016
JW
Jarrett Walker — holds since 2016-07-21 — tap for who they are
Same subject: In low-density places driverless taxis really will beat buses, and transit agencies should hand that work over and concentrate on dense corridors. — tap to centre the map on it In low-density places driverless taxis really will beat buses, and transit agencies should hand that work over and concentrate on dense corridors. Last stated 12 years ago
4 Nov 2014
JW
Jarrett Walker — holds since 2014-11-04 — tap for who they are
Same subject: Self-driving cars will not fix commuting; the US needs public transportation instead. — tap to centre the map on it Self-driving cars will not fix commuting; the US needs public transportation instead. Last stated 3 weeks ago
19 Aug 2026
AR
Armin Ronacher — holds since 2026-08-19 — tap for who they are
JW
Jarrett Walker — holds since 2014-11-04 — tap for who they are
Same subject: Spreading jobs into a polycentric region does not cut commuting: transit ridership is weaker there than in cities with one strong centre. — tap to centre the map on it Spreading jobs into a polycentric region does not cut commuting: transit ridership is weaker there than in cities with one strong centre. Last stated 6 months ago
10 Mar 2026
AL
Alon Levy — holds since 2026-03-10 — tap for who they are
Same subject: Today's level of city living depends on cheap fossil fuels and is unlikely to survive without them. — tap to centre the map on it Today's level of city living depends on cheap fossil fuels and is unlikely to survive without them. Last stated 2 months ago
30 Jun 2026
CS
Chris Smaje — holds since 2026-06-30 — tap for who they are
Same subject: Technology never changes geometry: a transport problem has to be solved spatially before it is solved at all. — tap to centre the map on it Technology never changes geometry: a transport problem has to be solved spatially before it is solved at all. Last stated 10 years ago
21 Jul 2016
JW
Jarrett Walker — holds since 2016-07-21 — tap for who they are
Same subject: The real cost of transport demonstration projects is that they confuse decision-makers about whether mass transit still needs building. — tap to centre the map on it The real cost of transport demonstration projects is that they confuse decision-makers about whether mass transit still needs building. Last stated 8 years ago
20 Dec 2018
JW
Jarrett Walker — holds since 2018-12-20 — tap for who they are
Same subject: Frequent fixed-route buses are the only way to cover a whole city with useful transit quickly, which makes them a land-use decision rather than a fallback. — tap to centre the map on it Frequent fixed-route buses are the only way to cover a whole city with useful transit quickly, which makes them a land-use decision rather than a fallback. Last stated 10 years ago
21 Jul 2016
JW
Jarrett Walker — holds since 2016-07-21 — tap for who they are
Same subject: "Food from thin air" is not from thin air: it runs on water, minerals, ammonia and industrial plant. — tap to centre the map on it "Food from thin air" is not from thin air: it runs on water, minerals, ammonia and industrial plant. Last stated 2 months ago
30 Jun 2026
CS
Chris Smaje — holds since 2026-06-30 — tap for who they are
Same subject: A country outside the AI supply chain should just buy the index — which works only in the world where AI ends up commoditised rather than concentrated. — tap to centre the map on it A country outside the AI supply chain should just buy the index — which works only in the world where AI ends up commoditised rather than concentrated. Last stated 3 months ago
4 Jun 2026
AI
Alex Imas — holds since 2026-06-04 — tap for who they are
Same subject: A future of constrained energy will need more people working the land, and that is not the same as going back to the past. — tap to centre the map on it A future of constrained energy will need more people working the land, and that is not the same as going back to the past. Last stated 2 months ago
30 Jun 2026
CS
Chris Smaje — holds since 2026-06-30 — tap for who they are
Same subject: A five-year-old's vision is already good enough to drive a car, on a tiny and strikingly undiverse amount of data. — tap to centre the map on it A five-year-old's vision is already good enough to drive a car, on a tiny and strikingly undiverse amount of data. Last stated 9 months ago
25 Nov 2025
IS
Ilya Sutskever — holds since 2025-11-25 — tap for who they are
Same subject: A good robotaxi demonstration in one city does not mean the company is ready to scale the service. — tap to centre the map on it A good robotaxi demonstration in one city does not mean the company is ready to scale the service. Last stated a year ago
8 Jul 2025
TL
Timothy B. Lee — holds since 2025-07-08 — tap for who they are
Same subject: A huge fleet collecting driving data is not a silver bullet for self-driving, because the data arrives unlabelled. — tap to centre the map on it A huge fleet collecting driving data is not a silver bullet for self-driving, because the data arrives unlabelled. Last stated 2 years ago
21 May 2024
TL
Timothy B. Lee — holds since 2024-05-21 — tap for who they are
Same subject: American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation. — tap to centre the map on it American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation. Last stated a year ago
6 Apr 2025
MH
Molson Hart — holds since 2025-04-06 — tap for who they are
Same subject: Europe cannot meet its energy needs from renewables alone and will need nuclear power, solar power from deserts elsewhere, or both. — tap to centre the map on it Europe cannot meet its energy needs from renewables alone and will need nuclear power, solar power from deserts elsewhere, or both. Last stated 18 years ago
3 Nov 2008
DM
David MacKay — holds since 2008-11-03 — tap for who they are
Same subject: Most nuclear companies will not have this solved by 2031, and many still will not by 2035, because they have the wrong mindset. — tap to centre the map on it Most nuclear companies will not have this solved by 2031, and many still will not by 2035, because they have the wrong mindset. Last stated 3 weeks ago
15 Aug 2026
IT
Isaiah Taylor — holds since 2026-08-15 — tap for who they are
At the centre
No dense city anywhere runs without heavy reliance on transit, and no new transport technology changes the space arithmetic that makes that true.
Holds JW Jarrett WalkerRead this korrent →
Replacing big transit vehicles with small ones puts more vehicles on the street to move the same people, which is the one thing a dense city has no room for.
Holds JW Jarrett Walker
In low-density places driverless taxis really will beat buses, and transit agencies should hand that work over and concentrate on dense corridors.
Holds JW Jarrett Walker
Self-driving cars will not fix commuting; the US needs public transportation instead.
Holds JW Jarrett Walker
Spreading jobs into a polycentric region does not cut commuting: transit ridership is weaker there than in cities with one strong centre.
Holds AL Alon Levy
Today's level of city living depends on cheap fossil fuels and is unlikely to survive without them.
Holds CS Chris Smaje
Technology never changes geometry: a transport problem has to be solved spatially before it is solved at all.
Holds JW Jarrett Walker
The real cost of transport demonstration projects is that they confuse decision-makers about whether mass transit still needs building.
Holds JW Jarrett Walker
Frequent fixed-route buses are the only way to cover a whole city with useful transit quickly, which makes them a land-use decision rather than a fallback.
Holds JW Jarrett Walker
"Food from thin air" is not from thin air: it runs on water, minerals, ammonia and industrial plant.
Holds CS Chris Smaje
A country outside the AI supply chain should just buy the index — which works only in the world where AI ends up commoditised rather than concentrated.
Holds AI Alex Imas
A future of constrained energy will need more people working the land, and that is not the same as going back to the past.
Holds CS Chris Smaje
A five-year-old's vision is already good enough to drive a car, on a tiny and strikingly undiverse amount of data.
Holds IS Ilya Sutskever
A good robotaxi demonstration in one city does not mean the company is ready to scale the service.
Holds TL Timothy B. Lee
A huge fleet collecting driving data is not a silver bullet for self-driving, because the data arrives unlabelled.
Holds TL Timothy B. Lee
American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation.
Holds MH Molson Hart
Europe cannot meet its energy needs from renewables alone and will need nuclear power, solar power from deserts elsewhere, or both.
Holds DM David MacKay
Most nuclear companies will not have this solved by 2031, and many still will not by 2035, because they have the wrong mindset.
Holds IT Isaiah Taylor