00:16:16 · Jonathan Brebner, Nato Saichek
[00:16:16] S0: Yeah, mean is that something you're considering? [00:16:18] S1: I mean, I think it's totally possible. There's a lot of oxygen on the moon. You know, you have to bake the rocks to get it out. But you know, the thing, we're we're a gas based accelerator. So you know, space is not notorious for being full of gas. But but you know, the moon would be reasonable because, yeah, even with an oxygen based accelerator, you know, speed of sound of oxygen's in the neighborhood of 300 and something meters per second. So we could easily go, you know, a kilometer. Exit velocity from the moon is like a kilometer per second. So we could totally do something on the moon with oxygen. We don't need hydrogen on the moon.
00:16:52 · Jonathan Brebner, Nato Saichek
[00:16:52] S0: Okay so that kind of brings me to a topic. I think you kind of just went through and sort of experienced it in real time there, which is one of the things I like about Longshot story and the giant potato gun is it sounds a little bit like a high school science project. I mean that in the most complimentary sense, but then taken to its logical conclusion. But there is a mindset behind that that is sort of, I guess, like a beginner's or learner's mindset, which is to say it is a credulous and curious mindset instead of an incredulous skeptical one. And it seems like there are so many ideas where it's very easy for them to not happen because you describe it, you're like we're gonna make a giant 15 kilometer long space gun and we're gonna shoot stuff into space. And like to most people that just sounds like, no you're not. That's insane. And then someone, if you are the type of person who can be like, let me do some math. [00:17:56] S1: What's the next step? What's the first thing I would need to figure out?
00:17:56 · Nato Saichek, Jonathan Brebner
[00:17:56] S1: What's the next step? What's the first thing I would need to figure out? [00:17:59] S0: Which is true of most founders, That is what founders do is they stop and they go, but wait, maybe it'll work. Right? And then you convince a few people, but most people go like, no, you're not correct. But you experienced this with your co founder. I understand it, right? Because originally your co founder, my research suggested, saw some version of like a TED Talk from the guy who ran the HARP program. Yep. Jonathan was like, this sounds cool, why don't we try to do that again? And then was friends with you and called you up and said like, I wanna build a giant space gun and you went. [00:18:35] S1: So talk to [00:18:36] S0: me about that process.
00:18:37 · Nato Saichek
[00:18:37] S1: I've got my feet firmly on the ground. Yeah. No. So I've I've known Mike for something like fifteen years. I was, an early employee at, Planet. I was making, Earth observation satellites, And that was originally in a garage in a house in Cupertino, and Mike lived in the house. Classic. Right. And so I was eating him out of house and home. You know, I was eating his groceries from the fridge for lunch. And then eventually we became friends. And he has always had a lot of crazy ideas. He'd call me up and be like, hey, Nato, I wanna build a solar powered blimp that carries its own electrolysis machine, so it can it can, like, land in the ocean and then refuel, and then... And and I, you know, we we talk about... You know, we go back and forth like, oh, okay. I've got an idea. I wanna make a retrovirus that, like, turns my eyes green. Like, okay. You know, he's like, all kinds of... He'd have a variety of ideas, and, you know, I've I've done a little bit in biotech. I've, you know, I'm I'm a multidisciplinary engineer. And so we'd we'd go back and forth and and and sometimes we would play with stuff. We we got a giant Fresnel lens and we baked stuff in my backyard or in the garage or we built microwave susceptor materials for a microwave rocket thing that we were talking about. There's a whole bunch of... So we played around with a whole bunch of ideas. And when he came with the the space gun idea, I basically like, oh, you gotta align the barrel. That's gonna be impossible. You gotta do this. It's gonna be imp... This is this is hard. This is hard. This is hard. This is also you're not even... Like how are you gonna do this? Like, you can't prototype this. It's really hard to prototype this thing. Like, you know, it's it's... A lot of these things you can think of, how do you make the first small thing, and what can you do in the garage scale? And we could come up with things. But this one seemed really hard to do any of that. But but to his credit, he basically just kept coming back with, oh, talked to this professor so and so, and they said, they showed me this paper where they did this, that, the other, and like, oh, can solve that problem this way, and oh, you know, that's a good point. Know, okay. We went back and forth, and eventually, basically, the last objection that I had was that the system was gonna have to be too long.
00:20:31 · Nato Saichek, Jonathan Brebner
It was gonna have to be hundreds of kilometers long because of this, you know, this gas pressure drop off thing or something. I don't remember what my reasoning was. And and he said, I don't think it's gonna be that bad because we've got this, that, the other. And I was like, build a simulation, run it, and and you'll see it's gonna be too long. And he's like, I'm not a coder. I don't write simul... You make a simulation. And I was like, okay, I'll make a simulation. So I made a simulation, and at first it came back really bad, and then I found an, you know, oh, I flipped a sign there. Okay. Fix that. Fix that. Oh, extra zero. Get rid of that. And came back, okay, look. This thing only has to be, you know, four and a half kilometers long. And he was like, I think it needs to be longer than that. Four kilometers long? That's there's no way we're gonna do it in four kilometers. I'm like, look, I did the math. I've got the physics. Look at this. And he's like, I don't care about the physics. The main thing that just happened here is you believe the system more than I do now. So how come you're not on board already? And I was like, okay, good point. [00:21:27] S0: I mean what you've described is kind of a classic, having both sides of something, which is eye in the sky and feet on the ground, and sort of an iterative process of helping each other build conviction in the thing. Because I have to imagine that he was thinking like, I have to be able to convince Nato.
00:21:27 · Jonathan Brebner, Nato Saichek
[00:21:27] S0: I mean what you've described is kind of a classic, having both sides of something, which is eye in the sky and feet on the ground, and sort of an iterative process of helping each other build conviction in the thing. Because I have to imagine that he was thinking like, I have to be able to convince Nato. [00:21:46] S1: Yeah, he needed to be able to convince technically competent people that this thing is plausible or it's not gonna be, no one's gonna build it. Right? So, but once he had me on board, I feel like it makes it a lot easier if you can say like, oh, here's a guy who's been building satellites and rockets and robots for fifteen, twenty years. [00:22:07] S0: Yeah, because you were at a rocket company. [00:22:09] S1: Yeah, I was actually, I was at [00:22:10] S0: absolute You were building rockets.