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This Week in Startups

Are Brain-Computer Interfaces Actually Ready for Humans?

73 min episode · 3 min read
·
Matt Engel

Episode

73 min

Read time

3 min

Topics

Productivity, Health & Wellness, Startups

AI-Generated Summary

Key Takeaways

  • BCI Signal Decoding: Paradromics records from motor cortex neurons using microwires thinner than human hair, placed within 0.1mm of target neurons. Training requires repeated attempts at known sentences to build paired neural-activity datasets. Large language models then clean up the decoded output — the same way speech-to-text works on phones — dramatically improving accuracy and reducing the error rate in thought-to-text translation.
  • BCI Moore's Law Trajectory: Each Paradromics device generation doubles data throughput. The current Connexus cortical module contains 421 microwire electrodes; the next generation scales to 1,024. Founders evaluating deep-tech hardware should model capability roadmaps this way — not just product features, but electrode-count or equivalent density metrics that compound over device cycles, similar to transistor scaling in semiconductors.
  • Blended-Wing-Body Market Gap: Jet Zero targets the 200-250 passenger segment where no current aircraft exists — single-aisle jets top out at 200 passengers (three-class) and wide-bodies start at 250-plus. This gap represents a product-market-fit beachhead in a multi-trillion-dollar TAM. United Airlines has a loose agreement for 100 aircraft with an option for 100 more, each priced deep into nine figures.
  • Aircraft Efficiency Stack: The blended-wing-body design delivers 30% aerodynamic efficiency improvement over tube-and-wing through three enabling technologies: optimized lift-over-drag aerodynamics, advanced flight control systems for stability, and composite structures. Since fuel represents roughly one-third of airline operating costs, a 30% aerodynamic gain translates to approximately 10% total cost reduction — a structurally significant margin improvement for any carrier operating at scale.
  • CGM as Metabolic Feedback Loop: Continuous glucose monitors reveal individual-specific food responses invisible to standard dietary advice. One person spikes into diabetic glucose ranges for two to three hours after eating rice but tolerates potatoes without issue. Nutrisense users who stay on the platform 12-plus months lose 20-30 pounds without pharmaceuticals, purely through behavioral changes driven by real-time glucose feedback combined with weekly or biweekly dietitian sessions.

What It Covers

Three founders cover distinct hardware frontiers: Paradromics CEO Matt Engel explains how implantable brain-computer interfaces with 421-electrode microwire arrays translate neural signals into speech; Jet Zero CEO Tom O'Leary details a blended-wing-body aircraft targeting 30-50% fuel savings; and Nutrisense CEO Dan Zavarotny describes continuous glucose monitoring paired with AI-assisted dietitians for metabolic health optimization.

Key Questions Answered

  • BCI Signal Decoding: Paradromics records from motor cortex neurons using microwires thinner than human hair, placed within 0.1mm of target neurons. Training requires repeated attempts at known sentences to build paired neural-activity datasets. Large language models then clean up the decoded output — the same way speech-to-text works on phones — dramatically improving accuracy and reducing the error rate in thought-to-text translation.
  • BCI Moore's Law Trajectory: Each Paradromics device generation doubles data throughput. The current Connexus cortical module contains 421 microwire electrodes; the next generation scales to 1,024. Founders evaluating deep-tech hardware should model capability roadmaps this way — not just product features, but electrode-count or equivalent density metrics that compound over device cycles, similar to transistor scaling in semiconductors.
  • Blended-Wing-Body Market Gap: Jet Zero targets the 200-250 passenger segment where no current aircraft exists — single-aisle jets top out at 200 passengers (three-class) and wide-bodies start at 250-plus. This gap represents a product-market-fit beachhead in a multi-trillion-dollar TAM. United Airlines has a loose agreement for 100 aircraft with an option for 100 more, each priced deep into nine figures.
  • Aircraft Efficiency Stack: The blended-wing-body design delivers 30% aerodynamic efficiency improvement over tube-and-wing through three enabling technologies: optimized lift-over-drag aerodynamics, advanced flight control systems for stability, and composite structures. Since fuel represents roughly one-third of airline operating costs, a 30% aerodynamic gain translates to approximately 10% total cost reduction — a structurally significant margin improvement for any carrier operating at scale.
  • CGM as Metabolic Feedback Loop: Continuous glucose monitors reveal individual-specific food responses invisible to standard dietary advice. One person spikes into diabetic glucose ranges for two to three hours after eating rice but tolerates potatoes without issue. Nutrisense users who stay on the platform 12-plus months lose 20-30 pounds without pharmaceuticals, purely through behavioral changes driven by real-time glucose feedback combined with weekly or biweekly dietitian sessions.
  • AI-Augmented Clinician Model: Rather than replacing dietitians with AI, Nutrisense uses an AI layer called Nora to aggregate glucose data, nutrition logs, sleep, and workout data into a pre-session report. This reduces dietitian onboarding time from roughly one hour to two button presses, enabling more sessions per clinician while making each interaction feel more personalized. The model also addresses GLP-1 drug limitations — users who combine CGM monitoring with GLP-1 therapy avoid muscle mass loss and maintain weight loss after discontinuing the drug.

Notable Moment

Paradromics revealed that by implanting electrodes in a sheep's primary auditory cortex and playing sounds, researchers can decode exactly what the animal hears from brain activity alone. The same substrate governs human dreaming, meaning sufficiently placed electrodes could theoretically reconstruct dream content — a capability that already works in animal models today.

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Episode Transcript

Hello, everybody, and welcome back to Twist. This is Alex. Today is Monday, 03/16/2026, and we have three amazing interviews with world class, world changing founders coming your way. First up, we're gonna talk to Peridromics. They are building brain computer interfaces. Yes. BCIs really are coming. Then we're talking to Jet Zero, which brings me to a question. What if you had a plane, right, and it was just one big giant wing? Then we have Nutrisense. Yes. I know health tracking is all the rage because it's fair enough. Knowing what's going on in your body is a pretty important thing if you want to health max. And maxing's a big deal these days. I mean, just look at me. I'm looks maxing right now. Nutrisense, I think, is on the cutting edge of consumer health, and so I wanted to learn more. It's a great show. I learned a lot. I hope you enjoy it. We're back on Wednesday. Let's have some fun. This Week in Startups is brought to you by Caldera Lab. Whether you're starting fresh or upgrading your routine, Caldera Lab makes skincare simple and effective. Head to calderalab.com/twist and use Twist at checkout for 20% off your first order. Northwest Registered Agent. Get more when you start your business with Northwest. In 10 clicks and ten minutes, you can form your company and walk away with a real business identity. Learn more at northwestregisteredagent.com/twist. And Lemon, building a great team is essential to any business. Lemon is a marketplace of vetted, experienced engineers ready to take your company to the next level. Get 15% off your first four weeks of developer time at lemon dot I o slash twist. If you are an AI fan, you must have heard about the big hype in talking to your AI, talking to your using your voice. Well, that's well and good if you have that capability, if that's in your personal capacity. But what if your body doesn't quite do what you want it to do? You're going to need a little bit of help. And that's why I'm really excited that companies like Paradromics are working on taking BCIs out of the lab and putting them into our brains, not only so we can do cool stuff, but also so that everyone can participate in the future digital and AI revolution. So please join me in welcoming to the show. It's Matt Engel from Paradromics. Matt, how are you doing? Good. Thanks for having me. Dude, my absolute pleasure. I love brain computer interfaces because although I can type very quickly, I really do think though that my hands slow me down. And as AI gets faster, I just wanna be able to do more with my mind. So you are the exact person to talk to, but I'm getting ahead of myself. Tell me about your brain computer interface and how it works, if you don't mind. So we've built a brain computer …

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Books, tools, and gear mentioned in this episode

SignalCast may earn commission on purchases via these links. As an Amazon Associate, SignalCast earns from qualifying purchases.

Tools

  • by Nutrisense

    Nutrisense uses an AI layer called Nora to aggregate glucose data, nutrition logs, sleep, and workout data into a pre-session report.

Gear

  • by Paradromics

    The current Connexus cortical module contains 421 microwire electrodes; the next generation scales to 1,024.

Products

  • by Nutrisense

    Nutrisense CEO Dan Zavarotny describes continuous glucose monitoring paired with AI-assisted dietitians for metabolic health optimization. Nutrisense users who stay on the platform 12-plus months lose 20-30 pounds without pharmaceuticals.

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