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Carat

@xbtcarat • 4,692 subscribers

Big names. Big money. And who really ended up with it

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He's 26. Apple offered him $8.4 million for the tongue-controlled retainer he 3D-prints in a San Diego apartment on a $180 Prusa. He said no The retainer sits inside your mouth like an Invisalign tray. Inside it: a miniature accelerometer array wired to a Bluetooth LE chip, all encapsulated in medical-grade epoxy he sources from a Kearny Mesa dental supply company for $28 a bottle. It reads tongue and bite pressure patterns at 240 samples per second, translates them into cursor movements and click gestures, and streams the output to any device paired over Bluetooth. Total hardware cost per unit: $47. He wears his own retainer eleven hours a day and hasn't touched a mouse in six months He posted a demo video to Reddit r/AssistiveTech in October showing a full 47-minute Cursor coding session controlled entirely with his tongue and bite gestures. The post hit the front page in nine hours. An Apple Accessibility engineer found it through a Hacker News crosspost three days later. Tim Cook quote-tweeted the demo the following Wednesday - called it "the accessibility hardware Vision Pro should have shipped with." Apple's business development team wired an $8.4 million acquisition offer to his lawyer in November for the retainer design, the embedded firmware, and a three-year exclusivity contract that would make Apple the only distributor globally. He declined the offer in December. His public statement was seven words: "This should be open. Everyone needs it." He open-sourced the firmware and STL files on GitHub the same day Apple Vision Pro burned $3.5 billion in R&D on the premise that spatial computing input requires their proprietary hand-tracking silicon and their multi-year hardware roadmap. Neuralink raised at $2 billion on the same premise for neural implants. Tobii runs at $340 million selling eye-tracking hardware to accessibility clinics at $12,000 per unit. He runs a Prusa in a San Diego apartment printing a $47 retainer that a nine-year-old with cerebral palsy in Argentina downloaded and printed at her local library last week

He's 26. Apple offered him $8.4 million for the tongue-controlled retainer he 3D-prints in a San Diego apartment on a $180 Prusa. He said no The retainer sits inside your mouth like an Invisalign tray. Inside it: a miniature accelerometer array wired to a Bluetooth LE chip, all encapsulated in medical-grade epoxy he sources from a Kearny Mesa dental supply company for $28 a bottle. It reads tongue and bite pressure patterns at 240 samples per second, translates them into cursor movements and click gestures, and streams the output to any device paired over Bluetooth. Total hardware cost per unit: $47. He wears his own retainer eleven hours a day and hasn't touched a mouse in six months He posted a demo video to Reddit r/AssistiveTech in October showing a full 47-minute Cursor coding session controlled entirely with his tongue and bite gestures. The post hit the front page in nine hours. An Apple Accessibility engineer found it through a Hacker News crosspost three days later. Tim Cook quote-tweeted the demo the following Wednesday - called it "the accessibility hardware Vision Pro should have shipped with." Apple's business development team wired an $8.4 million acquisition offer to his lawyer in November for the retainer design, the embedded firmware, and a three-year exclusivity contract that would make Apple the only distributor globally. He declined the offer in December. His public statement was seven words: "This should be open. Everyone needs it." He open-sourced the firmware and STL files on GitHub the same day Apple Vision Pro burned $3.5 billion in R&D on the premise that spatial computing input requires their proprietary hand-tracking silicon and their multi-year hardware roadmap. Neuralink raised at $2 billion on the same premise for neural implants. Tobii runs at $340 million selling eye-tracking hardware to accessibility clinics at $12,000 per unit. He runs a Prusa in a San Diego apartment printing a $47 retainer that a nine-year-old with cerebral palsy in Argentina downloaded and printed at her local library last week

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A 16-year-old was babysitting his girlfriend’s 23-month-old son. The baby wouldn’t stop crying so he covered the boy’s head with a pillow and punched him in the head until his brain bled. The child died. At trial, the teen sobbed and screamed that he’d loved him. Then the judge read out a phone call he’d made from jail and it ended him. The boy’s name was Austin Smith. He was 23 months old. The 16-year-old, Dylan, was left alone to watch him and when Austin wouldn’t settle, he smothered him with a pillow and beat him in the head with his fists. The toddler suffered a brain hemorrhage and died. In the courtroom, Dylan put on a performance. He cried hard. He screamed that he never meant to kill anyone, that he loved little Austin, that it was all a terrible mistake. For a moment, it almost looked like it might work on the jury. Then the judge pulled out a recording a call Dylan had made to his own mother from jail, before the trial. On it, in his own voice, he’d laid out the plan: “I’m a 16-year-old blond kid. I just need to cry in front of the jury and they’ll feel sorry for me.” He hadn’t been grieving. He’d been rehearsing. The judge handed him the maximum: 25 years to life. So here’s what splits people: is 25-to-life too heavy for a 16-year-old who still has a whole life ahead of him or does a boy who kills a baby for crying, then coldly games the court with fake tears, deserve to never walk free at all?

Carat

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He's 24. He's killing Dyson's $750 cordless vacuum with a $40 motor and a 3D-printed impeller he prints in a Shenzhen apartment - and his pulls harder The motor is a brushless drone motor he buys wholesale in Shenzhen for $40. He prints the impeller and housing himself on a used Bambu Lab X1 he pulled from an electronics market liquidation for $600, iterating the blade geometry across 60 printed versions until it moved more air per watt than anything on the shelf. The finished unit pulls 240 air-watts of suction - Dyson's flagship V15 pulls 230 - and reverses to blow, inflating a beach ball in five seconds or clearing a plate of sunflower seeds in one pass. Total build cost per unit: $58. Weight: 340 grams, half of Dyson's He posted a demo to Reddit r/DIY in October showing the pump suck an entire leather glove flat into a jar in fifteen seconds, vacuum a plate of seeds in a single second, then reverse and inflate a balloon until it burst. The video hit 2.4 million views in nine days. By January he had shipped 340 units across China, Southeast Asia, and to a growing list of Western buyers who found him through the demo - detailers, electronics repair shops, and one Shenzhen drone factory using them to clear solder debris off boards. $47,600 in his account. His mother, a retired textile-factory line worker, packs every order at the kitchen table Dyson runs at $7 billion in annual revenue selling the V15 at $750 on the premise that high-suction cordless power requires their proprietary digital motor and their sealed filtration system. Shark pulls the mid-tier at $300 on the same premise. He builds a harder-pulling version on a 3D printer in a Shenzhen apartment that could pack a full week of production into a single shipping crate and have it clearing customs in Los Angeles by Tuesday

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