On June 30, 2021, Elon Musk posted four words, three letters and a pirate flag: "Rapidly Reusable Rockets, R R R." The internet went looking for a coin. I went looking for a house.
I run a construction company in Rhode Island that takes houses apart on purpose instead of demolishing them, and the three letters on every routing decision we make are his. I am saying so up front, because the only honest way to take an idea is to say where you got it.
Ours is RRR — Reuse › Resale › Recycle — route each recovered material to its most valuable recoverable state.
The insight is arithmetic, not virtue
Everyone thinks reuse is nice. That was never the SpaceX insight. The insight was that getting to Mars is a cost-per-ton problem, and you cannot solve a cost-per-ton problem while destroying the most expensive object in the operation every time you run it. Musk's line: it would have been impossible to colonize America with expendable boats.
Now look at what demolition does. A crew spends a day turning a structure a hundred people assembled into a pile. The pile goes into containers, the containers go to a facility, and the family that owned it borrows money to buy new material to rebuild the thing that just left in a truck. Every board in that container was already paid for. Every board leaves anyway.
That is the expendable boat. We do it about a million times a year in this country and nobody calls it a launch failure.
The tonnage is not a rounding error. The EPA counted 600.3 million tons of construction and demolition debris in a single year against 292.4 million tons of household trash. More than twice as much, with no bin and no curbside day.
A recovery rate is not a reusability rate
Here is the part that transfers cleanly from rockets to houses, and the part the building industry mostly gets wrong.
Recovering a booster and scrapping it for aluminum would still have been recovery. It would not have been reusability, and it would not have moved the cost per ton at all. The rocket had to come back in a condition that let it fly again.
Crushed concrete counts as diverted. It is also the end of the line for that material. To a landfill operator it is diverted tonnage; to a road crew it is base course; to the building it came from it is the last thing it will ever be. An industry that crushes well and reuses badly is not a circular industry. It is a linear one with a good press release.
So the ladder is strict, and it is read downward as value leaving the material:
| Destination | What it means | |
|---|---|---|
| Reuse | Held on site | The material goes back into the rebuild as the thing it already is |
| Resale | Builder's Open House | What the rebuild cannot absorb goes to another builder |
| Recycle | Processing | What nothing else will take is broken down to feedstock |
A rafter is worth the most while it is still shaped like a rafter and rated like a rafter. Cut it down and you are paid for wood. Grind it and you are paid for fiber. Nothing about the tree changed. What changed is how much of its usefulness survived the way we took it out.
The call is made per piece, at the moment of recovery, because a decision deferred is usually a grade lost. That is a routing instruction, not a poster.
Where the ladder stops
Most of a house climbs it: lumber, fixtures, windows, doors, trim, hardware, metals. Then you reach the foundation. Concrete resists clean separation in a way framing does not, it is the largest single mass in the building, and it has exactly one widely available destination, which is the bottom rung. That is a known constraint, not a solved one. It is the next piece, not this one.
What I actually took
Not a technology. Rockets and houses have almost nothing in common mechanically, and I am not in any league with the people who land boosters on ships. What I took was three letters, a priority order, and one sentence: the cheapest material is the one you already own and do not have to make again. Everything else in the company is downstream of taking that sentence seriously in an industry that never had to.
The honest labels
No ML Systems deconstruction has been performed yet. The company is bootstrapped and pre-revenue. The method is designed to recover up to 80–90% of a home's materials — that figure is MODELED, a design target from our own math, not a measured result. 51% resale is a soft goal, a direction rather than a metric the system enforces. The SpaceX facts are public and dated so they can be checked: the National Press Club announcement of September 29, 2011; the first booster landing in December 2015; the first reflight of a used booster on March 30, 2017; the post of June 30, 2021.
Musk put a pirate flag on it. I am fairly sure that means I can have it, as long as I say out loud where it came from.
Full piece: I Stole RRR from Elon Musk and SpaceX · the measurement problem underneath it: The Waste Stream Twice the Size. Sal, founder of ML Systems LLC — Rhode Island, NAICS 236115.
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