Philip Johnston

And just to be clear, I literally first got this message when I was inside a particle accelerator testing chips.

Good luck trying to run an H100 in space.

To be honest, this is actually very generous.

I really appreciate the good wishes.

And my personal favorite, this will never get off the ground in a very literal sense.

It's true that revolutionary ideas often sound stupid at first, but sadly it also happens to be true that most terrible ideas also often sound stupid at first.

So how can you be certain of which camp you're in and be sure that you're not in the second camp?

Well, it's important to reason from first principles, but it is, I mean, to be very honest, in order to know which camp you're in, most oftentimes it is gonna involve taking some risk.

If you don't take some risk, you're likely not doing anything consequential.

So for us, to know definitively if we can run an H100 in space, the best way to do that is to build a spacecraft and launch it to space, and that's exactly what we're doing with our first spacecraft launching next week.

So given how controversial and audacious this idea seems to be, I thought I would share a little bit of context about how this idea came about, and then share some of the pros and some of the cons.

A few years ago, I quite randomly, on a weekend, decided to take a trip down to Starbase, Texas, where SpaceX is building their new Starship rocket.

This wasn't a workshop or anything, I'm just a huge space nerd, and this is my idea of a fun weekend.

The first stop on the trip is to what they call the Rocket Garden, and it was the first time I had seen the massive new Starship launch vehicle that SpaceX is building.

This was impressive, but to be honest, what really impressed me, besides the Texas barbecue, which is amazing, what really impressed me was that across the road from where I'm standing, they are building, or they were building then, by far the largest factory I have ever seen.

They're building these two Starship Gigafactories that are essentially pretty similar to Tesla production lines in that they're designed such that within two years, they will be rolling one Starship per day off that production line.

This is interesting because while the launch cost with reusability might come down by 50 to 100 times, the launch capacity, i.e.

how many tons per year you can get to space, might go up by 1,000 times or more.

And how is that possible?

It's because Starship is the first ever fully reusable rocket.