RPL Johnson (@RPLJohnson) header
RPL Johnson (@RPLJohnson) profile picture

Engineer, Writer, Dad, Liminal Spaceman.

Joined November 2022
Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)Photo by RPL Johnson (@RPLJohnson)
Hysterical Perfection
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"You know what I'd love?" "Tell me..." "A big-budget single-player shooter." "We can make a single-player shooter." "A real, simple shooter. None of those open worlds, skill trees, crafting benches and guns with rarity colors." "We can do that. Insane graphics, linear levels, epic setpieces, heavy-feeling guns, a shotgun that actually sends people flying, credits in 12 hours. It will be just like the 2000s."
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Australians of a certain vintage (ie, GenX) will relate to this. It’s also excellent—have a listen.
This man just took the same plastic recorder that used to sound like a dying goose in elementary school and casually started shredding Sultans of Swing on it. Eyes half-closed, fully committed, fingers flying like he actually practiced this instead of just surviving Hot Cross Buns. Somewhere a music teacher is watching this and having an existential crisis. The recorder has seen things. It will never be the same.
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Nobody prepares you for the part in your 50’s where you're simultaneously trying to build muscle, lose fat, protect your knees, fix your hormones, eat 150g of protein, remember why you walked into the kitchen and realising that "getting wild on a Friday night" now means staying up late enough to watch the full movie without falling asleep halfway through. But here we are….. Thriving-ish….
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Sometimes the best book you’ll read this month is sitting quietly on a page with 3 reviews. Don't overlook the little indie books. There are some seriously good stories hiding there.
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RPL Johnson retweeted
I want to dwell on this a bit. Some of these problems were tackled by some of the smartest humans on the planet for maybe 10+ years and they couldn't solve them. Now a model worked for 3 hours per problem and solved 100s of them. Even assuming that ChatGPT Pro is ~10 sub-agents working constantly, that would perhaps be ~300m tokens total or $800 at Astra API prices. Even if this LLM would be priced at 10x, this is still hardly a huge amount of money and certainly fit within a $500/month sub. To say this again, you can wake up in the morning, pick a maths problem that hasn't been solved in decades, put it to your LLM, the make yourself a coffee, walk your dog, check your emails, smoke a joint... and the problem could be solved by the time you check back in. This is not normal.
"On average, each result used three hours of ChatGPT Pro thinking compute with [the unreleased internal OpenAI] model." So these unsolved problems were solved in 3 hours each of next gen chatty pro? 💀
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RPL Johnson retweeted
The first 5 Amaranthe audiobooks are on massive sale over at Chirp. $2.99 each, or grab them all for less than $15. This is over 65 hours of epic space opera adventure for the price of lunch! Find them⬇️
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Found an indie author whose books you love? Tell people. Not someday. Not when they have another release. Now. A genuine recommendation from a reader can carry more weight than a dozen promotional posts. Help someone discover a new favorite author.
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RPL Johnson retweeted
physics gives you read access to the universe, engineering gives you write access
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JUST IN: Researchers in Germany and Australia publish research paper proposing building pyramids on the Moon using lunar regolith. Why a pyramid? Its flat faces allow repeated, interchangeable blocks, while its sloping walls help gravity and covering material counteract the outward push of internal air pressure. The concept uses 361 interlocking blocks made from lunar regolith, heated into solid building material. No mortar and no connectors between blocks; their geometry holds them together. The proposed habitat would stand approximately 6.1 metres tall and measure 8.6 metres across, with an internal membrane to keep air inside. The team ran four computer simulations under lunar gravity, internal air pressure and external loading from covering material. One tested the complete pyramid. The other three tested what happened when a block was missing near the base, middle or apex. All four configurations remained structurally stable under the modelled conditions, with maximum vertical movement of roughly 1.6 millimetres in the missing-block cases. NASA has already invested in the broader ambition of building with lunar materials. In 2022, it awarded ICON a $57.2 million contract to develop construction technologies for potential lunar landing pads, habitats, and roads. This pyramid is a separate research proposal, but it tackles the same challenge. How much of a Moon base could we build using material already there? There’s still a long way from simulation to lunar home. The model assumes substantial external loading from covering material, and structural stability alone doesn’t establish airtightness after damage. But the ambition is compelling. Send the machinery, then use the Moon itself to build. To read the full research paper, visit: arxiv.org/html/2610.01770v1
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RPL Johnson retweeted
"explain how Shazam works" I had no idea Karpathy is so right about this custom explainer videos will change education
We'll be spending a lot more time trying to understand the outputs of language models. A few thoughts, tips & tricks: Writing. Something I've had success with: Ask your LLM to explain something in ASD-STE100, it's a controlled language specification originally developed for aerospace maintenance documentation. LLMs well-versed in this language and it comes with heavy constraints on clean writing style that I often find a lot more readable. Sometimes I've tried to soften it a bit e.g. ask for "80% of the way to ASD-STE100" because the spec is quite stringent. But even better: Diagrams / images. Instead of writing, ask your LLM to create a diagram. These can be a lot easier to process, parse, and understand. But even better: Web pages. Ask for output "in HTML" to get a beautiful, interactive webpage. LLMs are getting really good at frontend and can create beautiful experiences, animations, etc. But even better: Explainer videos. The output format I am most bullish on is fully custom / bespoke explainer videos generated on any arbitrary topic. Experiment with things like "Create a 3b1b style video explainer on X. Use my ElevenLabs API key for audio narration". (you'd need an API key for the latter or you can ask your LLM to find you decent free alternatives that use your local compute). This is actually starting to work! In summary: - As LLMs get better, they will do more and more of the legwork autonomously, and a lot more of our work will rise up the abstractions into oversight and understanding. - Luckily, LLMs can help here too because as intelligence and code are increasingly abundant, you can ask for large, custom, discardable software artifacts (e.g. web apps, video explainers) that would have never made sense to create before. Push the boundaries here and you'll be surprised.
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RPL Johnson retweeted
Everyone knows the SR-71 Speed Check story from Brian Shul. Here's a lesser known one: (1/2) "As a former SR-71 pilot, and a professional keynote speaker, the question I'm most often asked is "How fast would that SR-71 fly?" I can be assured of hearing that question several times at any event I attend. It's an interesting question, given the aircraft's proclivity for speed, but there really isn’t one number to give, as the jet would always give you a little more speed if you wanted it to. It was common to see 35 miles a minute. Because we flew a programmed Mach number on most missions, and never wanted to harm the plane in any way, we never let it run out to any limits of temperature or speed. Thus, each SR-71 pilot had his own individual “high” speed that he saw at some point on some mission. I saw mine over Libya when Khadafy fired two missiles my way, and max power was in order. Let’s just say that the plane truly loved speed and effortlessly took us to Mach numbers we hadn’t previously seen. So it was with great surprise, when at the end of one of my presentations, someone asked, “what was the slowest you ever flew the Blackbird?” This was a first. After giving it some thought, I was reminded of a story that I had never shared before, and relayed the following. I was flying the SR-71 out of RAF Mildenhall, England, with my back-seater, Walt Watson; we were returning from a mission over Europe and the Iron Curtain when we received a radio transmission from home base. As we scooted across Denmark in three minutes, we learned that a small RAF base in the English countryside had requested an SR-71 fly-past. The air cadet commander there was a former Blackbird pilot, and thought it would be a motivating moment for the young lads to see the mighty SR-71 perform a low approach. No problem, we were happy to do it. After a quick aerial refueling over the North Sea, we proceeded to find the small airfield. Walter had a myriad of sophisticated navigation equipment in the back seat, and began to vector me toward the field. Descending to subsonic speeds, we found ourselves over a densely wooded area in a slight haze. Like most former WWII British airfields, the one we were looking for had a small tower and little surrounding infrastructure. Walter told me we were close and that I should be able to see the field, but I saw nothing. Nothing but trees as far as I could see in the haze. We got a little lower, and I pulled the throttles back from 325 knots we were at. With the gear up, anything under 275 was just uncomfortable. Walt said we were practically over the field—yet; there was nothing in my windscreen. I banked the jet and started a gentle circling maneuver in hopes of picking up anything that looked like a field. Meanwhile, below, the cadet commander had taken the cadets up on the catwalk of the tower in order to get a prime view of the fly-past. It was a quiet, still day with no wind and partial gray overcast. Walter continued to give me indications that the field should be below us but in the overcast and haze, I couldn’t see it. The longer we continued to peer out the window and circle, the slower we got. With our power back, the awaiting cadets heard nothing. I must have had good instructors in my flying career, as something told me I better cross-check the gauges. As I noticed the airspeed indicator slide below 160 knots, my heart stopped and my adrenalin-filled left hand pushed two throttles full forward. At this point we weren’t really flying, but were falling in a slight bank. Just at the moment that both afterburners lit with a thunderous roar of flame (and what a joyous feeling that was) the aircraft fell into full view of the shocked observers on the tower." (Cont.)
The SR-71 Speed Check Story from Major Brian Shul's book Sled Driver will forever be one of the hardest tales in aviation. Here it is. There were a lot of things we couldn't do in an SR-71, but we were the fastest guys on the block and loved reminding our fellow aviators of this fact. People often asked us if, because of this fact, it was fun to fly the jet. Fun would not be the first word I would use to describe flying this plane. Intense, maybe. Even cerebral. But there was one day in our Sled experience when we would have to say that it was pure fun to be the fastest guys out there, at least for a moment. It occurred when Walt and I were flying our final training sortie. We needed 100 hours in the jet to complete our training and attain Mission Ready status. Somewhere over Colorado we had passed the century mark. We had made the turn in Arizona and the jet was performing flawlessly. My gauges were wired in the front seat and we were starting to feel pretty good about ourselves, not only because we would soon be flying real missions but because we had gained a great deal of confidence in the plane in the past ten months. Ripping across the barren deserts 80,000 feet below us, I could already see the coast of California from the Arizona border. I was, finally, after many humbling months of simulators and study, ahead of the jet. I was beginning to feel a bit sorry for Walter in the back seat. There he was, with no really good view of the incredible sights before us, tasked with monitoring four different radios. This was good practice for him for when we began flying real missions, when a priority transmission from headquarters could be vital. It had been difficult, too, for me to relinquish control of the radios, as during my entire flying career I had controlled my own transmissions. But it was part of the division of duties in this plane and I had adjusted to it. I still insisted on talking on the radio while we were on the ground, however. Walt was so good at many things, but he couldn't match my expertise at sounding smooth on the radios, a skill that had been honed sharply with years in fighter squadrons where the slightest radio miscue was grounds for beheading. He understood that and allowed me that luxury. Just to get a sense of what Walt had to contend with, I pulled the radio toggle switches and monitored the frequencies along with him. The predominant radio chatter was from Los Angeles Center, far below us, controlling daily traffic in their sector. While they had us on their scope (albeit briefly), we were in uncontrolled airspace and normally would not talk to them unless we needed to descend into their airspace. We listened as the shaky voice of a lone Cessna pilot asked Center for a readout of his ground speed. Center replied: "November Charlie 175, I'm showing you at ninety knots on the ground." Now the thing to understand about Center controllers, was that whether they were talking to a rookie pilot in a Cessna, or to Air Force One, they always spoke in the exact same, calm, deep, professional, tone that made one feel important. I referred to it as the " Houston Center voice." I have always felt that after years of seeing documentaries on this country's space program and listening to the calm and distinct voice of the Houston controllers, that all other controllers since then wanted to sound like that, and that they basically did. And it didn't matter what sector of the country we would be flying in, it always seemed like the same guy was talking. Over the years that tone of voice had become somewhat of a comforting sound to pilots everywhere. Conversely, over the years, pilots always wanted to ensure that, when transmitting, they sounded like Chuck Yeager, or at least like John Wayne. Better to die than sound bad on the radios. Just moments after the Cessna's inquiry, a Twin Beech piped up on frequency, in a rather superior tone, asking for his ground speed. "I have you at one hundred and twenty-five knots of ground speed." Boy, I thought, the Beechcraft really must think he is dazzling his Cessna brethren. Then out of the blue, a navy F-18 pilot out of NAS Lemoore came up on frequency. You knew right away it was a Navy jock because he sounded very cool on the radios. "Center, Dusty 52 ground speed check". Before Center could reply, I'm thinking to myself, hey, Dusty 52 has a ground speed indicator in that million-dollar cockpit, so why is he asking Center for a readout? Then I got it, ol' Dusty here is making sure that every bug smasher from Mount Whitney to the Mojave knows what true speed is. He's the fastest dude in the valley today, and he just wants everyone to know how much fun he is having in his new Hornet. And the reply, always with that same, calm, voice, with more distinct alliteration than emotion: "Dusty 52, Center, we have you at 620 on the ground." And I thought to myself, is this a ripe situation, or what? As my hand instinctively reached for the mic button, I had to remind myself that Walt was in control of the radios. Still, I thought, it must be done - in mere seconds we'll be out of the sector and the opportunity will be lost. That Hornet must die, and die now. I thought about all of our Sim training and how important it was that we developed well as a crew and knew that to jump in on the radios now would destroy the integrity of all that we had worked toward becoming. I was torn. Somewhere, 13 miles above Arizona, there was a pilot screaming inside his space helmet. Then, I heard it. The click of the mic button from the back seat. That was the very moment that I knew Walter and I had become a crew. Very professionally, and with no emotion, Walter spoke: "Los Angeles Center, Aspen 20, can you give us a ground speed check?" There was no hesitation, and the replay came as if was an everyday request. "Aspen 20, I show you at one thousand eight hundred and forty-two knots, across the ground." I think it was the forty-two knots that I liked the best, so accurate and proud was Center to deliver that information without hesitation, and you just knew he was smiling. But the precise point at which I knew that Walt and I were going to be really good friends for a long time was when he keyed the mic once again to say, in his most fighter-pilot-like voice: "Ah, Center, much thanks, we're showing closer to nineteen hundred on the money." For a moment Walter was a god. And we finally heard a little crack in the armor of the Houston Center voice, when L.A.came back with, "Roger that Aspen, Your equipment is probably more accurate than ours. You boys have a good one." It all had lasted for just moments, but in that short, memorable sprint across the southwest, the Navy had been flamed, all mortal airplanes on freq were forced to bow before the King of Speed, and more importantly, Walter and I had crossed the threshold of being a crew. A fine day's work. We never heard another transmission on that frequency all the way to the coast. For just one day, it truly was fun being the fastest guys out there.
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RPL Johnson retweeted
Wanting positive experience is a negative experience,...
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Philosophy accessories.
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RPL Johnson retweeted
The Terminator (1984) A deleted scene from the ending where it turns out the final confrontation between Sarah and the T-800 was actually at Cyberdyne, handing them the technology that leads to their creation and starts the future war. A great, bleak time loop paradox
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RPL Johnson retweeted
kind of crazy how brutal a mog this is.
Magnetic poetry by me (L) and my daughter (R)
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"A good man without strength is hoping that evil has mercy." — Sun Tzu
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