John Carmack Profile
John Carmack

@ID_AA_Carmack

Followers
1M
Following
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332
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18K

AGI at Keen Technologies, former CTO Oculus VR, Founder Id Software and Armadillo Aerospace

Dallas, TX
Joined August 2010
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@JeffGreason
Jeff Greason
3 days
A post I made 7 years ago on another forum that I think is worth sharing: There's so many lessons in thinking seriously about the technology of space settlement from the past human settlement. The most important one, though, is one I can barely put in to words. As recently as
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@ID_AA_Carmack
John Carmack
5 days
Anyone here on the Amazon Kindle iOS team? For ages now, the iPad kindle app has locked up for many seconds at a time when downloading large media files. Maybe a second or two wasn’t considered a big deal for downloading a book you are going to read for ten hours, but when you
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@ID_AA_Carmack
John Carmack
6 days
I view the proliferation of Halloween skeleton sizes through first edition AD&D monster manual heights: 3’ -> kobold, 4’ -> goblin, 6’ -> orc, 10’ -> ogre, 12’ -> stone giant. Waiting for the competition between Lowe’s and Home Depot to bring a storm giant!
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@ID_AA_Carmack
John Carmack
7 days
Has Maximum Power Point Tracking (MPPT) technology gotten dirt cheap enough that it is integrated into solar powered lawn lights? At some point, the tradeoff between “slightly bigger panel” and “added power electronics” crosses over.
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@ID_AA_Carmack
John Carmack
12 days
Blindsight by Peter Watts (2006) is my standout fiction book of the year, by far. Grand, challenging, scary, and super autistic.
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@ID_AA_Carmack
John Carmack
19 days
I helped fund the restoration of an old IBM S/34, and now I find myself occasionally thinking about what realtime games you could make run on a 5251 DisplayStation. Tetris would probably be the most engaging. Not sure if you could do it in RPG or COBOL; might require S/34
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@Slasher
Rod Breslau
25 days
celebrating 25 years of Quake 3 CPMA: the most skillful, hardest, fastest, greatest FPS of all time. the world's best esport. the true start of the aim community and freeform movement. the first frag movies and the birth of montages. watch it all at once. holy shit! by entik
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@ID_AA_Carmack
John Carmack
20 days
I expect AI to produce a lot of value while trying to make a coherent body of knowledge out of its training data, but on its own, AI is limited to a sort of ancient Greek philosophical process, where the method is rhetoric, rather than the experimental process of science. This
@elonmusk
Elon Musk
20 days
Join @xAI and help build Grokipedia, an open source knowledge repository that is vastly better than Wikipedia! This will be available to the public with no limits on use.
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@ID_AA_Carmack
John Carmack
20 days
Numpy’s fromfile()/tofile() make me smile — no typing or byte order metadata, they just write/read the raw bytes. A joyful API! I wish PyTorch had them natively on tensors, so I wasn’t doing so many tensor.cpu().numpy() operations.
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@ID_AA_Carmack
John Carmack
27 days
Sometimes I see papers with hyperparameter sweeps over 0.001, 0.003, 0.006, 0.01, etc. Many hyperparameters are better expressed in negative integral log2. Small values like learning rates directly, and values close to 1 like EMA factors and TD lambda / gamma with 1-2**val. It
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@ID_AA_Carmack
John Carmack
1 month
Teslas displaced my exotic cars many years ago, but with the Roadster still an indeterminate distance in the future, I had been feeling an urge for something a little more… analog. I was initially thinking about a 60’s Camaro with modernized running gear, but a part of me was
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@WalkaboutMG
Walkabout Mini Golf
1 month
Thank you so much for playing Walkabout Mini Golf over the past 5 years! We wanted to take a moment to look at some fascinating numbers and recap what our incredible players have been able to accomplish thus far! Read more here: https://t.co/XPbXKzYUuM
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@ID_AA_Carmack
John Carmack
1 month
The audience for this is small, but we have an open source repository for the “Physical Atari” work we did at Keen. Working purely in the physical world is a huge burden compared to simulation, but it is important to have a reasonable grasp of the gap between the two. The
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@ID_AA_Carmack
John Carmack
1 month
I recently learned about Cayley transforms. Similar to how you can parameterize a 3x3 rotation matrix by 3 Euler angles or a 4 element quaternion, Cayley transforms allow you to parameterize an N dimensional rotation matrix with just N*(N-1)/2 unique values in a skew-symmetric
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@ID_AA_Carmack
John Carmack
1 month
The scrolling console has been a valuable paradigm since physical teletypewriters in the 60s, and millions of programs have coded directly to that interface. It feels like we missed a sweet spot in output options just beyond that. There are many times I use a jupyter notebook
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@0xglitchbyte
Glitchbyte
1 month
Book list for street fighting computer scientists
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@ID_AA_Carmack
John Carmack
1 month
Remember radiosity? There was a period where it was a hot topic for global illumination, but ray tracing based solutions proved so much more flexible and efficient at scale that it is now just a historical curiosity. https://t.co/DsPEoVDSfI
Tweet card summary image
en.wikipedia.org
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@ID_AA_Carmack
John Carmack
2 months
My distracting thought for the morning is that you could have actually made a decent rhythm game on 8 bit Apple 2 hardware, but I don’t recall any examples. Screen presentation and effects would have to be minimal, and you wouldn’t get any high fidelity audio, but you could
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@ID_AA_Carmack
John Carmack
2 months
I wonder if the reticle limits in chip fabrication could be expanded if you were restricted to using less dense patterning in the periphery where the focus isn’t as sharp. Or if the quality of focus is radial, could you pattern slightly more circuitry in a circular die than the
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