5h ago

Richard Sutton, professor of computing science at the University of Alberta, posted a 26-word summary of his Bitter Lesson principle advocating scalable search and learning over human knowledge for AI progress

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Replies noted current models depend on human-generated data and prompts.

Original post

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

9:58 AM · May 18, 2026 View on X

@agarwl_ discarding humand data (be it in LLM or in non-trivial "classic" RL env) is just complete nonsense. Even if Rich says it. But I'm not sure he's actually saying this here.

Guess he should use more than 26 words, but then it wouldn't sound Ilya-style mysterious anymore :)

Rishabh AgarwalRishabh Agarwal@agarwl_

Perplexed by this take: Sure, let's not mainly do supervise learning on human knowledge, but it makes sense to build off it instead of the *let's do it from scratch*. People cite AlphaGo vs AlphaGo Zero as a quintessential example of how using human-generating data is suboptimal but it was *imitating* it that was suboptimal. What if we learned from that data assuming it was suboptimal in the first place (so not supervised learning but RL like mindset of using that data)

6:32 PM · May 18, 2026 · 10.5K Views
8:15 PM · May 18, 2026 · 455 Views

@RichardSSutton I think it is worth studying human knowledge, particularly understanding the structure of its abstractions, as they can provide guidance about the kinds of things humans learn and machines do not (yet). I wouldn't call that "distraction".

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
5:59 PM · May 18, 2026 · 3.9K Views

The bitter lesson in 26 words:

Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views

Also abstractions & knowledge curation.

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
7:08 PM · May 18, 2026 · 1.2K Views

i wonder whether this needs an update.

current methods, such as they are, leverage massive amounts of human knowledge as their primary fuel. they would be lost without it.

and they even build some knowledge into their system prompts.

and lately they build knowledge into their harnesses, usually by over 50 tools that have been carefully crafted with human knowledge.

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
7:13 PM · May 18, 2026 · 3.8K Views

Perplexed by this take: Sure, let's not mainly do supervise learning on human knowledge, but it makes sense to build off it instead of the *let's do it from scratch*.

People cite AlphaGo vs AlphaGo Zero as a quintessential example of how using human-generating data is suboptimal but it was *imitating* it that was suboptimal.

What if we learned from that data assuming it was suboptimal in the first place (so not supervised learning but RL like mindset of using that data)

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
6:32 PM · May 18, 2026 · 10.5K Views

@RichardSSutton The bitter lesson also applies to how you work, not just what you build. Don't let human capacity be your bottleneck. Instead focus on methods and tools for creating impact that leverage computation.

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
9:23 PM · May 18, 2026 · 211 Views

The bitter lesson also applies to how you work, not just what you build. Don't let human capacity be your bottleneck. Instead focus on methods and tools for creating impact that leverage computation.

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
8:51 PM · May 18, 2026 · 272 Views

bitter and sad

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
7:06 PM · May 18, 2026 · 2.1K Views

GOD GAVE US THE UNIVERSE, THE ORACLE. WE MUST MINE IT

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
6:57 PM · May 18, 2026 · 11K Views

@jiaxinwen22 I agree with you on continued technical progress on AI basically not needing human research taste at all. I think this frees us to work on things where the target is totally unclear, e.g. interpretability

Jiaxin WenJiaxin Wen@jiaxinwen22

I might be one of the few people who is most bearish on human research taste and bullish on automated research: - "AIs can only do hyperparameter search" is mainly a skill issue with bad automated research setups. - human taste is overrated, e.g. frontier labs / neolabs are doing pretty simlar things. - human taste might win in a low-compute world, but not a high-compute world we're entering.

6:43 PM · May 18, 2026 · 10.7K Views
8:36 PM · May 18, 2026 · 192 Views

@jiaxinwen22 Although if you look into how frontier labs are acquiring data, I think it feels way more human taste driven than one would expect. But yeah algos etc. overrated

Aryaman AroraAryaman Arora@aryaman2020

@jiaxinwen22 I agree with you on continued technical progress on AI basically not needing human research taste at all. I think this frees us to work on things where the target is totally unclear, e.g. interpretability

8:36 PM · May 18, 2026 · 192 Views
8:38 PM · May 18, 2026 · 61 Views

Natural language is human-created representation of the world.

Is the ultimate form of the bitter lesson to bypass natural language entirely and learn a new representation from the world itself?

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
7:23 PM · May 18, 2026 · 331 Views

@jiaxinwen22 how do you explain point 3 given that debate is empirically hard, LLM judge systematically fails to make reliable more subjective judgements (which is basically what taste is), etc? why doesn't this just result in the slop problems we see now when people try and scale SWE TTC?

Jiaxin WenJiaxin Wen@jiaxinwen22

I might be one of the few people who is most bearish on human research taste and bullish on automated research: - "AIs can only do hyperparameter search" is mainly a skill issue with bad automated research setups. - human taste is overrated, e.g. frontier labs / neolabs are doing pretty simlar things. - human taste might win in a low-compute world, but not a high-compute world we're entering.

6:43 PM · May 18, 2026 · 10.7K Views
7:17 PM · May 18, 2026 · 229 Views

@jiaxinwen22 median human taste is not great. the tails are pretty good, but for the purposes of "will AI replace a profession" the media is not hard to beat.

Jiaxin WenJiaxin Wen@jiaxinwen22

I might be one of the few people who is most bearish on human research taste and bullish on automated research: - "AIs can only do hyperparameter search" is mainly a skill issue with bad automated research setups. - human taste is overrated, e.g. frontier labs / neolabs are doing pretty simlar things. - human taste might win in a low-compute world, but not a high-compute world we're entering.

6:43 PM · May 18, 2026 · 10.7K Views
6:51 PM · May 18, 2026 · 749 Views

However, I hope humans keep doing our own research, with *strong* tastes and priors. Not all research is about outcomes. Sometimes you just want to solve/understand a problem in a way that feels like yours.

Jiaxin WenJiaxin Wen@jiaxinwen22

I might be one of the few people who is most bearish on human research taste and bullish on automated research: - "AIs can only do hyperparameter search" is mainly a skill issue with bad automated research setups. - human taste is overrated, e.g. frontier labs / neolabs are doing pretty simlar things. - human taste might win in a low-compute world, but not a high-compute world we're entering.

6:43 PM · May 18, 2026 · 10.7K Views
6:50 PM · May 18, 2026 · 1.1K Views

I might be one of the few people who is most bearish on human research taste and bullish on automated research: - "AIs can only do hyperparameter search" is mainly a skill issue with bad automated research setups. - human taste is overrated, e.g. frontier labs / neolabs are doing pretty simlar things. - human taste might win in a low-compute world, but not a high-compute world we're entering.

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
6:43 PM · May 18, 2026 · 10.7K Views

@menhguin If the job of top human experts is just to write a few high-level directions and ask AIs to solve, I’d still call it automated research.

Minh Nhat Nguyen @ AIE SG 🇸🇬Minh Nhat Nguyen @ AIE SG 🇸🇬@menhguin

@jiaxinwen22 median human taste is not great. the tails are pretty good, but for the purposes of "will AI replace a profession" the media is not hard to beat.

6:51 PM · May 18, 2026 · 749 Views
6:53 PM · May 18, 2026 · 381 Views

i agree that human taste contributes a lot to frontier lab data quality. But I'd not be surprised that automated research proposes a very alien way to rewrite/score/filter data that outpeform humans. The way LMs absorb data is inherently very alien. so notions on difficulty, quality, diversity would be quite different from a human perspective vs. from an AI perspective

Aryaman AroraAryaman Arora@aryaman2020

@jiaxinwen22 Although if you look into how frontier labs are acquiring data, I think it feels way more human taste driven than one would expect. But yeah algos etc. overrated

8:38 PM · May 18, 2026 · 61 Views
8:45 PM · May 18, 2026 · 33 Views

Probably the best position paper in ML, now fits in a tweet

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
5:39 PM · May 18, 2026 · 1.3K Views

@agarwl_ the key issue seems to be “we’re operating inside of a bad box, here’s the good box” people like to agree on the second part, but few internalize why “human knowledge” is so attractive and why “how humans learn” is another humanization

Rishabh AgarwalRishabh Agarwal@agarwl_

Perplexed by this take: Sure, let's not mainly do supervise learning on human knowledge, but it makes sense to build off it instead of the *let's do it from scratch*. People cite AlphaGo vs AlphaGo Zero as a quintessential example of how using human-generating data is suboptimal but it was *imitating* it that was suboptimal. What if we learned from that data assuming it was suboptimal in the first place (so not supervised learning but RL like mindset of using that data)

6:32 PM · May 18, 2026 · 10.5K Views
7:31 PM · May 18, 2026 · 275 Views

@RichardSSutton The center of mass of AI history is like six month ago, so I'd say it was mostly about LLMs and learning from humans

Richard SuttonRichard Sutton@RichardSSutton

The bitter lesson in 26 words: Don’t be distracted by human knowledge, as AI has been historically. Instead focus on methods for creating knowledge that scale with computation, like search and learning.

4:58 PM · May 18, 2026 · 175.2K Views
6:33 PM · May 18, 2026 · 339 Views