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Lightcone · 3 min · Jun 19, 2025

Neuralink could raise human communication bandwidth

Elon Musk says Neuralink is not needed for digital superintelligence, but could expand how much people can send and receive. He shares early results for computer control and a possible vision implant timeline.

Elon Musk

Elon Musk is a technology entrepreneur.

  • Garry Tan, Host · President & CEO, Y Combinator

    Co-founded Posterous and Initialized Capital, an early Coinbase backer.

  • Harj Taggar, Host · Managing partner, Y Combinator

    Co-founded Auctomatic with the Collison brothers and later Triplebyte.

  • Diana Hu, Host · Managing partner, Y Combinator

    CTO of Escher Reality; after Niantic bought it, ran AR for Pokémon GO.

  • Jared Friedman, Host · Managing partner, Y Combinator

    Co-founded Scribd, which YC funded in 2006; has advised 20+ YC unicorns.

About this segment

Elon Musk says Neuralink is not needed for digital superintelligence, but could expand how much people can send and receive. He shares early results for computer control and a possible vision implant timeline.

From “Elon Musk: Digital Superintelligence, Multiplanetary Life, How to Be Useful”, Jun 19, 2025. Watch the full episode

“The sustained output of a human over the course of a day is less than one bit per second.”
Elon Muskat 43:47 · Lightcone43:47

Takeaways

  1. Musk estimates human output at less than one bit per second.
  2. Five people have received implants to control computers and phones.
  3. Neuralink aims to begin vision implants within six to twelve months.

In this episode

Full episode
  1. 25:44First-principles reasoning can expose hidden cost reductions6:20
  2. 17:01SpaceX and Tesla nearly ran out of money in 20085:11
  3. 43:08Neuralink could raise human communication bandwidth3:15

  4. 5 more moments in the full episode
Up next · BG2AI productivity could bend the US debt-to-GDP curve5:46

Transcript

Transcribed by machine (Whisper) from the episode’s audio, so a word may be off here and there.

  1. 43:21

    yet but i'm curious you know you're working on closing the input and output gap between humans and machines uh how critical is that to agi asi and you know once that link is made Can we not only read, but also write? The Neuralink is not necessary to solve digital superintelligence. That'll happen before Neuralink is at scale. But what Neuralink can effectively do is solve the input-output bandwidth constraints, especially our output bandwidth is very low.

  2. 44:00

    The sustained output of a human over the course of a day is less than one bit per second. So there's 86,400 seconds in a day, and it's extremely rare for a human to output more than that number of symbols per day. So certainly for several days in a row. So you really, with a Neuralink interface, you can massively increase your output bandwidth and your input bandwidth. um input being right to you have to do right operations to the brain um we we have now five humans who have received the uh the kind of the read uh input where it's reading signals and you've got people with with als who um really have no they're tetraplegics but they they can now communicate at with similar bandwidth to a human with a fully functioning body and control their computer and phone which is pretty cool and then i think in the next six to 12 months we'll be

  3. 45:06

    doing our first implants for vision where even if somebody's completely blind we can write directly to um the uh the visual cortex um and and we've had that working in monkeys actually i think one of our monkeys now has had a visual implant for three years and um at first it'll be relatively fairly low resolution but long term you would have very high resolution and be able to see multi-spectral wavelengths so you could see an infrared ultraviolet radar like a superpower power situation. But like, at some point, the cybernetic implants wouldn't would not simply be correcting things that went wrong, but augmenting human capabilities dramatically.

  4. 45:55

    augmenting, augmenting intelligence and senses, and bandwidth dramatically. And that's, that's going to happen at some point. But digital superintelligence will happen well before that. At least if we have a neural link, we met