Tap a claim on the ring to put it at the centre.
← The cost of major tunnel projects should not be attributed to the cost…
17 connected korrents · 15 moments from 20 Dec 2018 to 9 Sept 2026. Nearly all of them are about infrastructure .
Everything filed under benchmarks
benchmarks
Everything filed under energy
energy
Everything filed under the cloud
the cloud
Everything filed under China
China 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: The cost of major tunnel projects should not be attributed to the cost of surface electrification when benchmarking rail costs. The cost of major tunnel projects should not be attributed to the cost of surface electrification when benchmarking rail costs. Last stated 3 months ago
7 Aug 2026
AL
Alon Levy — holds since 2026-08-07 — tap for who they are
Same subject: A steady pipeline of transit projects does not by itself prevent costly systems-engineering mistakes, as shown by London's Crossrail. — tap to centre the map on it A steady pipeline of transit projects does not by itself prevent costly systems-engineering mistakes, as shown by London's Crossrail. Last stated 4 months ago
29 Jun 2026
AL
Alon Levy — holds since 2026-06-29 — tap for who they are
Same subject: China's high-speed rail costs, once adjusted for the amount of tunneling, are not especially low compared to France's. — tap to centre the map on it China's high-speed rail costs, once adjusted for the amount of tunneling, are not especially low compared to France's. Last stated 4 months ago
29 Jun 2026
AL
Alon Levy — holds since 2026-06-29 — tap for who they are
Same subject: Rapid electrification programs without continuous rolling pipelines can still be built cost-effectively, as in Denmark, Israel and India. — tap to centre the map on it Rapid electrification programs without continuous rolling pipelines can still be built cost-effectively, as in Denmark, Israel and India. Last stated 4 months ago
29 Jun 2026
AL
Alon Levy — holds since 2026-06-29 — 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: The high cost of transit projects is often exacerbated by the fact that soft costs, such as planning and engineering, can equal the entire project cost in some locations. — tap to centre the map on it The high cost of transit projects is often exacerbated by the fact that soft costs, such as planning and engineering, can equal the entire project cost in some locations. Last stated 2 months ago
31 Aug 2026
RM
Reece Martin — holds since 2026-08-31 — tap for who they are
Same subject: High infrastructure costs are not Baumol's cost disease: what a country pays per kilometre of subway barely tracks how rich it is. — tap to centre the map on it High infrastructure costs are not Baumol's cost disease: what a country pays per kilometre of subway barely tracks how rich it is. Last stated 2 years ago
22 Jun 2024
AL
Alon Levy — holds since 2024-06-22 — tap for who they are
Same subject: Building out low-speed regional rail to small towns before intercity rail is fast enough is a waste of money. — tap to centre the map on it Building out low-speed regional rail to small towns before intercity rail is fast enough is a waste of money. Last stated 4 months ago
7 Jul 2026
AL
Alon Levy — holds since 2026-07-07 — tap for who they are
Same subject: Environmental cost-benefit analyses systematically understate what a new metro line is worth, because most of the driving it displaces happens elsewhere on the network. — tap to centre the map on it Environmental cost-benefit analyses systematically understate what a new metro line is worth, because most of the driving it displaces happens elsewhere on the network. Last stated 8 months ago
10 Mar 2026
AL
Alon Levy — holds since 2026-03-10 — tap for who they are
Same subject: 'Everyone gets it wrong sometimes' is a bad argument when assessing track records. — tap to centre the map on it 'Everyone gets it wrong sometimes' is a bad argument when assessing track records. Last stated 3 months ago
2 Aug 2026
AK
Adam Kucharski — holds since 2026-08-02 — tap for who they are
Same subject: A benchmark result should be reported under a stated budget, or as a curve against test-time compute — never as a single number. — tap to centre the map on it A benchmark result should be reported under a stated budget, or as a curve against test-time compute — never as a single number. Last stated 4 months ago
26 Jun 2026
NB
Noam Brown — holds since 2026-06-26 — tap for who they are
Same subject: A benchmark that ranks Claude Code last while it stays first in use is measuring the wrong thing, and has been for a year. — tap to centre the map on it A benchmark that ranks Claude Code last while it stays first in use is measuring the wrong thing, and has been for a year. Last stated 2 months ago
3 Sept 2026
DR
Dax Raad — holds since 2026-09-03 — tap for who they are
Same subject: An oil embargo without a price cap would reduce global oil supply and push up benchmark prices like Brent. — tap to centre the map on it An oil embargo without a price cap would reduce global oil supply and push up benchmark prices like Brent. Last stated 4 years ago
11 Oct 2022
SJ
Simon Johnson — holds since 2022-10-11 — tap for who they are
Same subject: "Carbon intensity" metrics let oil companies claim climate progress even as their total emissions rise from increased production. — tap to centre the map on it "Carbon intensity" metrics let oil companies claim climate progress even as their total emissions rise from increased production. Last stated 2 months ago
9 Sept 2026
EA
Emily Atkin — holds since 2026-09-09 — tap for who they are
Same subject: "Energy essence personality" is as close as anyone can get to saying who or what Seth is — tap to centre the map on it "Energy essence personality" is as close as anyone can get to saying who or what Seth is
JR
Jane Roberts — holds since c. 1963–1970 — tap for who they are
Same subject: Not using own servers is financial malpractice for mid-sized SaaS businesses — tap to centre the map on it Not using own servers is financial malpractice for mid-sized SaaS businesses Last stated 4 years ago
21 Feb 2023
DH
David Heinemeier Hansson — holds since 2023-02-21 — tap for who they are
Same subject: A world where everything is on the web and nothing on machines we own has lost a core freedom. — tap to centre the map on it A world where everything is on the web and nothing on machines we own has lost a core freedom. Last stated a year ago
4 Oct 2025
BS
Brent Simmons — holds since 2025-10-04 — tap for who they are
Same subject: After the cloud exit, the next step is out of the data centre: home servers and multi-gigabit home connections make the garage startup literal again. — tap to centre the map on it After the cloud exit, the next step is out of the data centre: home servers and multi-gigabit home connections make the garage startup literal again. Last stated a year ago
12 Jul 2025
DH
David Heinemeier Hansson — holds since 2025-07-12 — tap for who they are
At the centre
The cost of major tunnel projects should not be attributed to the cost of surface electrification when benchmarking rail costs.
Holds Read this korrent →
A steady pipeline of transit projects does not by itself prevent costly systems-engineering mistakes, as shown by London's Crossrail.
Holds
China's high-speed rail costs, once adjusted for the amount of tunneling, are not especially low compared to France's.
Holds
Rapid electrification programs without continuous rolling pipelines can still be built cost-effectively, as in Denmark, Israel and India.
Holds
The real cost of transport demonstration projects is that they confuse decision-makers about whether mass transit still needs building.
Holds
The high cost of transit projects is often exacerbated by the fact that soft costs, such as planning and engineering, can equal the entire project cost in some locations.
Holds
High infrastructure costs are not Baumol's cost disease: what a country pays per kilometre of subway barely tracks how rich it is.
Holds
Building out low-speed regional rail to small towns before intercity rail is fast enough is a waste of money.
Holds
Environmental cost-benefit analyses systematically understate what a new metro line is worth, because most of the driving it displaces happens elsewhere on the network.
Holds
'Everyone gets it wrong sometimes' is a bad argument when assessing track records.
Holds
A benchmark result should be reported under a stated budget, or as a curve against test-time compute — never as a single number.
Holds
A benchmark that ranks Claude Code last while it stays first in use is measuring the wrong thing, and has been for a year.
Holds
An oil embargo without a price cap would reduce global oil supply and push up benchmark prices like Brent.
Holds
"Carbon intensity" metrics let oil companies claim climate progress even as their total emissions rise from increased production.
Holds
"Energy essence personality" is as close as anyone can get to saying who or what Seth is
Last stated c. 1963–1970
Holds
Not using own servers is financial malpractice for mid-sized SaaS businesses
Holds
A world where everything is on the web and nothing on machines we own has lost a core freedom.
Holds
After the cloud exit, the next step is out of the data centre: home servers and multi-gigabit home connections make the garage startup literal again.
Holds