korrents
Brian Potter

Brian Potter

@brian-potter · 43 positions · 1 change of mind · On ppll ↗

Structural engineer and writer, author of the Construction Physics newsletter, where he takes apart how large physical things — buildings, ships, semiconductor fabs, aeroplanes — actually get made, and why the cost of making them moves the way it does.

Brian Potter did not write this page.

We collected these quotes from things they published elsewhere, and every quote links to where it was said. They have no account here and have not endorsed this site. Quotes are word for word; the short line under each one is our own restatement, not their wording. Their own site. Is this you? Claim it or ask us to remove it. Or tell us what is wrong here.

5 of Brian Potter's claims fit 4 mental models. Most often: Bottlenecks, Incentives, Margin of safety.

Models they name

Their own words name the idea.

Bottlenecks

A system moves only as fast as its narrowest point; speed up anything else and nothing changes.

Used by 88 others

Available power, not land or capital, is what now limits how many data centres get built.

  1. Brian Potter Structural engineer and writer In particular, operating a data center requires large amounts of electricity, and available power is fast becoming the binding constraint on data center construction. How to Build an AI Data Centerconstruction-physics.com · 10 Jun 2024All korrents from this piece
    In particular, operating a data center requires large amounts of electricity, and available power is fast becoming the binding constraint on data center construction.

The binding constraint on building anything in America is permitting and litigation, not money.

  1. Brian Potter Structural engineer and writer Political costs and civic opposition will often make a technology unviable regardless of how the dollars and cents add up. Why we stopped building subways cheaplyworksinprogress.news · 28 May 2025All korrents from this piece
    Political costs and civic opposition will often make a technology unviable regardless of how the dollars and cents add up.

Power laws

In many things a few cases account for most of the result, so the average misleads and the outlier decides.

Used by 25 others

Models we see in what they say

Our reading: their claim applies the idea without naming it. The claim is theirs; filing it here is ours.

Incentives

Look at what people are rewarded for; it explains more behaviour than what they say, your own included.

Used by 85 others

The person who specifies a new building system carries all its risk and none of its reward, a reverse moral hazard that keeps construction innovation out.

  1. Brian Potter Structural engineer and writer In many cases, the person specifying a new system won’t capture the upside from actually using it - they’ll be under a sort of reverse moral hazard, where the benefits accrue to the rest of the project team, but the risks will accrue only to them. Why It's Hard to Innovate in Constructionconstruction-physics.com · 30 Jun 2021All korrents from this piece
    In many cases, the person specifying a new system won’t capture the upside from actually using it - they’ll be under a sort of reverse moral hazard, where the benefits accrue to the rest of the project team, but the risks will accrue only to them.

Margin of safety

Leave room for being wrong, because sometimes you will be.

Used by 28 others

A contractor's upside on a job is a single-digit margin and the downside is the whole company, and that asymmetry is why construction is conservative.

  1. Brian Potter Structural engineer and writer The upside of any given project is usually a single-digit profit margin. But the downside is “whatever your company is worth” Why It's Hard to Innovate in Constructionconstruction-physics.com · 30 Jun 2021All korrents from this piece
    The upside of any given project is usually a single-digit profit margin. But the downside is “whatever your company is worth”