#414 How SpaceX Works

0:00A few years ago, I started working on a book called SpaceX Foundation. A historical account of SpaceX's first decade told through firsthand sources. Firsthand sources like Elon's company updates, launch dispatches, internal memos. This is the real-time record of a company that almost died three times and then became the most dominant launch provider on Earth. The gap between SpaceX and everyone else is enormous and widening. Yet most of what's been written focuses on Elon himself, not on the specific methods, cultures, and decisions that actually built the company. That is what the book is about.

0:36While the book is still in progress, I've been writing an introduction essay as a way to work through the central question. Why did SpaceX succeed in ways no one else has been able to replicate? And more importantly, is any of it learnable? The practices that made SpaceX dominant aren't unique to rockets. It's their blueprint for building anything hard. That's the introduction to this introduction essay of this book. So the introduction essay is called Atoms are Cheap, Process is Pricey, What SpaceX Teaches Us About Building Hard Things. It is written by Max Olson, who is writing that book called SpaceX Foundation.

1:12I've read this essay three times. I think it's really good. So I want to go through some of the main ideas with you. And so the essay starts like this. SpaceX has been remarkably open about how they operate. They've been succeeding in public for more than 15 years now, and yet no one has replicated the results. Competitors know their strategy. The engineering philosophy gets explained in interviews, tweets, and factory tours. Many of the ideas aren't even new. Lockheed Skunk Works ran similar approaches 60 years ago. Founder Kelly Johnson's 14 rules read like a SpaceX operations manual. The performance gap just keeps getting bigger.

1:45In 2025, SpaceX launched more mass to orbit than every other provider on Earth combined. Much more. This is crazy. Every payload from China, Russia, Europe, and all American launchers wasn't even a fifth of what SpaceX put into orbit. They're the only company producing rockets at an industrial scale. A Falcon 9 goes up every two to three days. Competitors manage single-digit launches per year. The same boosters have been reused 20 times each. The company has sent astronauts to the International Space Station, the first private company to do so. Starlink, their satellite internet constellation, now has over 9 ,000 satellites in orbit, the largest in history.

2:30Both built and launched by the same company. SpaceX is now the most valuable private company on the planet. Yet the skeptics were confident it couldn't happen. Apollo astronauts Neil Armstrong and Gene Kernan testified before Congress against commercial spaceflight. They said that they thought reusability is a dream, and even if it did work, the market was too small to support the hundreds of launches needed to make reusability worth it. Elon was described as a software guy playing with expensive toys. The early failures seemed to confirm them. Three Falcon 1 explosions between 2006 and 2008. By September 2008, SpaceX had funds for exactly one more attempt, and Tesla was weeks away from bankruptcy.

3:10Elon was borrowing money for rent. Then it worked. Flight 4 succeeded, and NASA's$1.6 billion cargo contract followed six weeks later. Then came Falcon 9, Dragon, ISS docking, boosters exploding on the pad, boosters landing, crewed flights, and eventually Starship. So is any of this outlier performance repeatable? This is the puzzle. If the strategy is known and the principles are public, what's actually hard to copy? Obvious factors explain some of this, but not enough. And so he goes over some of the factors. The space shuttle retired, creating a gap. This was really good timing for NASA to become SpaceX's biggest customer.

3:50But Blue Origin was founded two years earlier, and Boeing and Lockheed saw the same opportunity. The grand vision of boots on Mars attracted missionaries, but ambitious visions are cheap, and plenty of founders have them. Elon putting in$100 million bought Early Runway, but Bezos poured much more into Blue Origin and Legacy Primes had multiples of this amount. Technology was also getting better. 3D printing, simulation, advanced materials, all commercially available to competitors. These factors are real and none are sufficient. If they explained it, others could have caught up easily, but they're not even close.

4:22SpaceX is a hotbed of case study material. Engineering, product, finance, strategy, manufacturing, product management, etc. If you're interested in the company, these are all important, but I'm more curious about which are repeatable. The question isn't why did SpaceX succeed? That's too vague to be useful. The sharper question, what can someone building hard things actually take away? And so then Max breaks it down into a bunch of subheadings. The first one is the strategy. What SpaceX has done more than anything is minimize the cost of getting things to space. The vision is humanity expanding across our solar system, but the lever is the cost of moving mass from Earth's surface to orbit and beyond.

5:03Everything else, the launches, the landings, the reuse, serves that goal. When you study how companies hold advantages over time, consistently being the low-cost provider might be the hardest to maintain. The reason is that it has to be baked into everything you do. It cannot be an initiative or an afterthought. It has to shape how you design products, structure the company, and choose what to build. And as you'll see in the book, it all started from the earliest days. Before starting SpaceX, Elon wanted to get to Mars, but he didn't set out to build a rocket manufacturer. In 2001, he tried buying Russian ICBMs to get there, but the Russians quoted him ridiculous prices.

5:44So he famously reframed the question from first principles. What is a rocket made of? Aerospace-grade aluminum alloys plus some titanium, copper, and carbon fiber. And then I asked, what is the value of those materials on the commodity market? It turned out that the materials cost of a rocket was around 2 % of the typical price, which is a crazy ratio for a large mechanical product. 2%. Your car's raw materials are maybe 20 to 30 % of the sticker price. Consumer electronics are similar. But rockets, 98 cents of every dollar was going somewhere other than what it was made of. Where was it going?

6:20Three places, it seems. supplier markup stacking through contract layers, each tier adding 15 to 30 % margin, custom designs that couldn't achieve manufacturing scale, and expendable hardware thrown away after every flight. None of these are the laws of physics. Traditional aerospace treated high costs as fixed constraints, but what if you treated them as variables? How do you actually capture that 98 %? I'm reading an early copy of this book called The Book of Elon. It's written by my friend Eric Jorgensen. and it'll be out in a few weeks. It's about 200 pages of just Elon in his own words. And he was actually talking about another way to think about this.

6:57This is what Elon says from this book. How could the Russians build low-cost rockets? It's not like we drive Russian cars, fly Russian planes, or have Russian kitchen appliances. The US is a pretty competitive place and we should be able to build a cost-efficient launch vehicle. So back to the essay, another subheading, rethink from first principles. Start with the actual product. If you accept existing solutions, you accept their cost structure. So rebuild from physics instead. Don't ask, what do rockets cost? Ask, what should rockets cost? Elon eventually named this the Idiot Index, the ratio of the actual cost of a part to the cost of its raw materials.

7:32If the ratio is high, he says, you're an idiot. Consider the Falcon 1 actuator. A vendor quoted$120 ,000 in 18 months of development. SpaceX's engineers built it for$3 ,900. When founding engineer Tom Mueller's team asked about a critical engine valve, the supplier kind of smirked and left after hearing SpaceX's timeline and budget. Mueller's team made the valve themselves. This pattern repeated across the vehicle. The Dragon's capsule docking mechanism was reinvented from off-the-shelf bike shocks and catalog parts instead of adopting NASA's existing design. There are probably a hundred examples like this.

8:16most not discussed in public. The philosophy extended to fundamental architecture. SpaceX uses one propellant pair, liquid oxygen and RP-1 kerosene, across all stages. The vacuum Merlin engine uses a fixed nozzle extension instead of a deployable one. This is the main point. Fewer moving parts means fewer failure modes means lower cost. Compare this to the Atlas V rocket, which uses up to three different rocket types in a single vehicle, each optimized for its flight phase. Elon's response to this was, you've just tripled your factory costs and all your operational costs. And so he continues to give examples of how they think and all these little decisions they're making.

8:58The Merlin engine family embodies this trade-off. Russian RD-180 engines cost$20 to$25 million each, while the Merlin 1D production runs around a million. How? SpaceX eliminated hydrogen's complexity by using kerosene. used regenerative cooling with the fuel itself and optimized for manufacturability over maximum performance. The result was 95 % of theoretical efficiency for 80 % cost reduction. Merlin's performance is slightly lower, but good enough at 1 20th the cost. But identifying where to cut costs doesn't mean you can actually cut them. You still have to build the parts. Once SpaceX concluded that atoms were cheap and process was expensive, vertical integration followed almost inevitably.

9:42That's a great line. SpaceX concluded that atoms were cheap and process was expensive, and so therefore vertical integration followed almost inevitably. The next subheading talks about this, becoming your own supplier. If materials are cheap and the tax is all process and overhead, you need to control the process to capture the savings. You cannot negotiate your way to a 10x cost reduction with suppliers who have profits baked in at every tier. So SpaceX became its own supplier. By building 80 % of its hardware internally—engines, structures, avionics, software, and key ground systems— SpaceX collapsed the traditional aerospace stack.

10:18They outsource raw materials and commodity parts and make everything else themselves. That's something SpaceX didn't originally set out to do, one engineer noted, but was driven by suppliers' high prices. This wasn't an ideological commitment to doing everything in-house. It was the result of suppliers repeatedly quoting prices and timelines incompatible with SpaceX's cost targets. The benefits compound. When several tiers each add 15 % margin, total cost multiplies through the layers. A NASA study found SpaceX developed Falcon 9 for roughly$440 million. They estimated the same work with traditional contractors would have cost 3 to 10 times that amount.

11:01Vertical integration also accelerates iteration. Another great line. Vertical integration also accelerates iteration. When an engineer needs to change a bracket, weld, or circuit board, the manufacturing engineer is in the same building, using the same CAD systems and tooling. Materials, jigs, and processes can evolve together on the scale of weeks, enabling a rapid progression from Falcon 1 to successive Falcon 9 variants. Each iteration improving performance and reducing cost without waiting for suppliers to retool on multi-year cycles. But vertical integration creates a new problem. It concentrates fixed costs.

11:36If you own the factory, the machines, and the staff, you're losing money every second they aren't building something. At the traditional launch cadence of two to four vehicles per year, in-house manufacturing is a liability, not an advantage. To make the math work, you need volume. Before we get back into this, I want to tell you about the presenting sponsor of this podcast, Ramp. One of the main themes in the history of SpaceX is constantly attacking and questioning your costs. Ramp helps many of the most innovative businesses in the world do exactly that. The median company running on Ramp cuts their expenses by 5%.

12:07And just like SpaceX has demonstrated, a religious dedication to controlling costs helps increase revenue and pursue opportunities you couldn't otherwise. We see that in the Ramp data too. The median company running on Ramp also grows their revenue by 16%. Many of the top founders and CEOs I know run their business on Ramp. I run my business on Ramp and you should too. Go to ramp.com today to learn how they can help your business save time and money. That is ramp.com. So that brings us to the next subheading, build a platform. The only way to get volume is to standardize. Build a common platform that customers have to adapt to.

12:42The existing approach was bespoke vehicles per mission. Custom adapters, mission-specific modifications, multiple vehicle families. This optimizes each mission at the expense of manufacturing scale. SpaceX bet the opposite, that cost savings from standardization would exceed the value of customization. Yes, customers wanted custom solutions, but they wanted low prices even more. Force them to choose and they will adapt. The Falcon 9 became the industry's Model T, one rocket built in volume, same nine Merlin engines on the first stage, Same vacuum Merlin on the second. Same structure, same diameter, same aluminum, lithium alloy, same welding methods, same avionics, same ground systems.

13:26Even Falcon Heavy is just three Falcon 9 first stages strapped together with a shared upper stage. A scaled variant from the same core, not a new vehicle. SpaceX published a Falcon User's Guide, which defined bolt circles, electrical connectors, and fairing environments. customers designed to SpaceX's spec instead of demanding customizations. Satellite orbits adjusted to Falcon performance curves. This flipped the negotiating power. Instead of aerospace companies serving satellite specifications, satellites adapted to SpaceX capabilities. The economics of manufacturing is what makes this work.

14:06Building 40 identical Falcon 9s annually creates automotive-style learning curves that are impossible in custom aerospace. As production scales, learning improves and cost declines. How this worked in practice is that every anomaly, wear pattern, or manufacturing defect fed back directly to the teams that design the parts. Finally, there's the logical conclusion of standardization, which is reusability. Reusable boosters are still the same Falcon 9 cores. You aren't just building the same model of rocket. You are literally flying the exact same hardware. Because every booster was identical, every landing attempt provided perfectly comparable data.

14:47If making 40 rockets creates a manufacturing learning curve, flying the same rocket 20 times creates an operational learning curve that's even steeper. The economics are devastating for competitors. Traditional providers launching a handful of custom vehicles per year never accumulate enough data to even start this cycle. And this is so good how Max ties this all together. You can probably see why all three tactics were necessary. First principles identified the waste. Vertical integration provided the control to eliminate it. Standardization allowed the volume to make that control profitable.

15:25Without all three, the system breaks. They work together so that each flight makes the next one cheaper. What does this sound like? A flywheel. Lower costs enable lower prices, which capture market share, which increases volume, which drives costs lower still. The incumbents understood this too late. They optimized components locally, better engines, lighter materials, incremental gains. SpaceX optimized the system for cost, accepting component level compromises for system level dominance. This flywheel relies on high volume. Competitors couldn't even imagine there was even a market for so many rockets.

16:06And they weren't willing to take the risk of spending all the money just to find out. In a world where atoms are cheap and process is expensive, the real innovation was not a single engine or material, but the decision to redesign the entire stack around the economics of cost. But a cost target doesn't build itself. First principle strategy says what to build. It doesn't say how to build it without catastrophic mistakes along the way. On to the next subheading, the engineering, if the strategy is to rethink everything from first principles, how do you actually execute that without major consequential failures?

16:38The standard answer is to analyze exhaustively before building. So he's going to describe the standard answer. And I love how he talks about SpaceX literally inverted this. Traditional aerospace follows this path religiously. A NASA report on the commercial crew program noted that Boeing utilizes a well-established systems engineering methodology targeted at an initial investment in engineering studies and analysis to mature the system design prior to building and testing. Must be really fun to read these kind of reports. Plan extensively, freeze requirements early, minimize test failures. This is the measure twice, cut once approach.

17:12SpaceX inverted this. Here's the problem with the traditional approach. You can't think your way to perfect solutions for problems you don't fully understand. That's another bar. You can't think your way to perfect solutions for problems you don't fully understand. Your model is always wrong in the ways you don't know yet. Complex systems have emergent behaviors that only appear when the pieces are actually bolted together. This is the paradox of first principle design. If you're questioning every inherited assumption, which you should, you're venturing into territory where analysis alone can't tell you what works.

17:46The physics might be known, but how the physics will interact with your specific materials, your specific manufacturing tolerances, your specific assembly process, that's not something you could derive from first principles. That's something you have to discover. And so what SpaceX does instead is they use reality as their validation tool. The alternative is to use reality as your primary validation tool. SpaceX focuses on rapidly iterating through a build, test, learn approach that drives modifications towards design maturity. Where Boeing invests up front in analysis, SpaceX invests up front in prototypes.

18:22The core philosophy is deceptively simple. Failures are data, not disasters. Tight feedback loops lead to a high rate of innovation and adaptation, quickly finding better solutions of what not to do. Speed is a tactical advantage. This isn't new. During World War II, the P-80 fighter jet went from concept to test flight in five months. In the early 1960s, the SR-71 Blackbird went from idea to rollout in four years. And it's still the fastest man plane ever built. That's nuts. Could that possibly be true? In the early 1960s, the SR-71 Blackbird went from idea to rollout in four years, and it's still the fastest man plane ever built.

19:08Small teams, fast iteration, real hardware. In a 2021 Starbase interview, Elon explained the goal with each Starship prototype. push the envelope such that it blows up. That is the end of his quote. That is his whole quote. Push the envelope such that it blows up. This sounds reckless until you understand what he's actually saying. If the vehicle doesn't fail, you haven't learned where the limits are. Each failure is a precise data point about where reality diverges from your model. How can you reconcile this fail-fast approach with the care that's needed to reliably build things where human lives are on the line?

19:44The crucial distinction is between development and operations. SpaceX runs both, but with completely different risk profiles. So for the Dragon, it carries crew. It can never fail. So there's large margins of safety. There's exhaustive testing. There's conservative everything. The Falcon 9, which is the operational launch vehicle, it's middle ground. It says ascent can't fail, but some landing attempts are allowed to. And then Starship, which is development, failure is instrumental. And Elon has a quote about this. He says, Starship does not have anyone on board so we can blow things up. It is really helpful.

20:17And this is a good way to think about this. This is the same company doing two very different things with two very different groups of people and two very different risk profiles. But they're talking to each other. And so if you go back to their very first four launches, it says the contrast with traditional aerospace is stark. In that world, a three-failure start may have triggered years of analysis, review boards, and redesigns on paper before the next attempt. At SpaceX, each flight became the next test. with fixes incorporated immediately. This pattern continued into Starship. The early integrated flights each ended in rapid, unscheduled disassemblies, which is their name for explosions.

20:55But each came after achieving partial objectives, such as clearing the pad, passing the max Q, reaching near-orbital velocity. Then finally, the famous catch of the super-heavy booster, which is the equivalent of catching a 20-story building that's falling from the edge of space. Each subsequent flight incorporated design changes based on telemetry from the previous one. Where traditional aerospace might take years to go from flight anomaly to design change, SpaceX was doing it in between flights. Next subheading, have a high production rate. Iteration only works if you can afford many attempts.

21:31This is where SpaceX's hardware-rich approach becomes essential. This is what Elon says about this. A high production rate solves many ills. He has said this repeatedly. He continues. Any given technology development is how many iterations do you have and what's your time and progress between iterations. So if you have a high production rate, you can have a lot of iterations. You can try a lot of different things. If you have a small number of engines, then you have to be much more conservative because you can't risk blowing them up. SpaceX builds many cheaper prototypes, hardware-rich fleets of test articles.

22:08They'd rather have 10 rough versions to blow up than one polished version they're flayed to break. This can lead to specific design decisions like using stainless steel for Starship, which is cheap, easy to weld, and can be welded in a tent, by the way, instead of carbon fiber, which is expensive and requires giant autoclaves. Vertical integration really helps enable this. When you own the factory, you can build fast without waiting on vendors. When you own 3D printing capability, you can produce parts on an ad hoc basis. When you can manufacture Raptor engines at high volume, losing one to a test failure doesn't set you back months.

22:44SpaceX is big into simulation as well. This moves atoms to bits where possible, letting them pre-screen designs before blowing things up. But real tests remain primary. The question being constantly asked is how quickly can it be tested in as real an environment as possible? And again, Max does a great job of tying this all together down here. The pieces reinforce each other in a way that's easy to miss. First, principles engineering reduces unnecessary complexity. Fewer parts means each prototype is cheaper to build. Cheaper prototypes mean you can build more of them. More prototypes means faster iteration.

23:21Faster iteration means you can push each prototype to failure without being precious about it. More failures means more data. More data means better designs. Better design means even simpler solutions, and the cycle continues. Meanwhile, fail-fast iteration extracts maximum information per prototype and per flight. You're not just testing whether something works. You're finding exactly where it breaks. That precision accelerates the next iteration. The strategy, low-cost, vertical integration, enables the engineering approach. The engineering approach validates the strategy faster than analysis ever could.

24:03Traditional aerospace eliminates uncertainty through planning. SpaceX eliminates uncertainty through doing. But this system doesn't run itself. Running an organization that constantly questions requirements, deletes parts, and accepts visible failures requires something that can't be built through iteration. An engineering process that treats failure as data only works if the engineers themselves believe it. A system that pushes to the edge of what's possible only survives if the people doing the pushing can handle the intensity. The practices described here are the mechanism, but they're powered by something else entirely.

24:40And that goes to his next subheading, which is the people. And so Max writes, back to my original point, the practices I've described so far aren't secret. So why can't others just copy them? The standard answer is organizational inertia, bureaucracy, risk aversion, etc. And yet there's truth to all of these, but it's not the whole story. The answer is that strategy doesn't exist in isolation. The same playbook in a different environment would produce different results or nothing at all. You can't copy strategy without transplanting the conditions that make them work. A fail-fast culture needs people willing to fail visibly.