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"you could have..." is among the top insulting phrases used by maths-adjacent people. Others in that league are "it should now be obvious...", "it's abundantly clear...", "it can be easily shown that...", "this is nothing but..." etc.

The rest of us reading this are like, holy batman, what the fuck was that?!

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Also the proof is so trivial that it’s left to the reader.
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This one hurts the most, esp. in fields you're not familiar.
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Well, at least these days an actually trivial (to a domain expert) proof can be delegated to a frontier model...
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In the future this might be replaced with "you can verify this fact by asking an LLM of your choice". Similar to how people in chat arguments already post screenshots of an LLM answer to show that their opinion is correct.
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Counterexample left as an exercise for Fable
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Answer with:

You could have your own hacker news, it's just a textbox, a bunch of tables and headings! Once you add these, it'll be abundantly clear that you also need a database. It should now be obvious that you also need a user system and it can be easily shown that needs a backend. Admin tools, tests, statistics, performance checks and so on can easily be derived from such backend.

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Math educators like Grant Sanderson (3blue1brown) use it in a very specific way: the goal of a mathematical explanation is to make the learner feel like they could have come up with something. And a really good mathematical communicator can absolutely do that.

A piece like this which uses it in a headline but in no way makes an average reader feel like they could have come up with it is just badly misjudging how good of an explanation it is.

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I don’t think “you” in these titles ever really refers to an “average reader”. Some familiarity with the field is required. Imagine how non-programmers (and many programmers) feel about some examples I just Googled:

“You Could Have Invented Parser Combinators”

“You Could Have Invented Container Runtimes”

“You Could Have Invented Git”

Given the references to “mathematicians”, I think this reaction is more about an unfamiliarity with the concept of applied mathematics, which is ironic for practitioners in a field containing so much that is (or should be) regarded that way.

Software used to be all about “discrete math”, logic, maybe a bit of queuing theory…and now suddenly linear algebra and statistics became important. Don’t panic, it’s just another textbook on the shelf.

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I think the origin of the title formula is Timothy Chow's "You Could Have Invented Spectral Sequences" (https://www.ams.org/notices/200601/fea-chow.pdf), which is certainly not aimed at an average reader.
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So I think what’s a little unfair there is that “you could have invented container runtimes”[1] is an article which really tries to answer ‘how does someone who works in traditional software development with an understanding of operating systems and deployment that is a few years out of date get brought up to date on what they need to know so that to them, something like container runtimes become a logical and obvious thing that solves a problem they now understand?’

What this particular mathematical writeup seems to address is ‘how does someone who is already up to speed on the mathematical underpinnings of attention kernel neural networks get brought up to date on what they need to understand in order to see this new algorithm as obvious’

Which is a smaller audience to be sure, and - given how fast this field has grown - somewhat disingenuous in its implications.

This kind of title is appropriate for a piece aimed at helping someone who is a little behind the curve catch up. In the field of deep learning it should be obvious even to the people inside it riding that curve that it is moving really fast and that this kind of content only works for people who are running to keep up.

[1] https://medium.com/@gtrevorjay/you-could-have-invented-conta...

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Chill, it's just a rhetorical phrase. They want to show that this KDA is the result of a series of incremental improvements, and I think they did a pretty good job at that.

I often find people get annoyed at mathy stuff because they seem to think that they should be able to read it like a (comparatively low information dense) newspaper article or something similar.

Math isn't like that, it usually has high information density and you need to parse every single symbol. And also people make this mistake where they gloss over stuff they don't get because they think they'll just understand things from context. Works great in normal literature - but math ain't like that. If you don't understand something, go back to the definitions.

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Right next to "Learn More" by software UI designers.
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Doubleword AI is conducting a classic textbook marketing trick called newsjacking.

Writing a detailed technical post behind the news of Kimi K3 and KDA algorithm with an audacious title like "You Could Have Invent Breakthrough It too" they are pre-filtering out the ones who couldn't comprehend with quick read (myself included) and attracting the ones who agreed with the blog post. At the end with a strong CTA to promoting their 10x cheapter open weight model AI inference and hiring too.

Good job Doubleword, I see what you are doing there.

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lol - co-founder of Doubleword here. honoured you think we have sophisticated enough marketing to 'newsjack'. What actually happened is my cofounder wrote it over the weekend because he's a mega-nerd and put it live yesterday. I hadn't even read it until I saw this hacker news thread lol

We're just a group of guys and gals who like inference!

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The blogs from doubleword are indeed full precision. A great team doing a fantastic job.
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“Kimi Delta Attention” because “Kimi K3 Delta Attention (oh that’s just our little internal name for it as a joke)” passes no sniff tests.
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(HN titled updated from previous “You Could Have Come Up With Kimi Delta Attention” … gotta check if someone maintains an “Editing The Gray Lady” for HN, for title histories and derankings)
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I don't even know most words they used in the paper haha
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Yeah, pretty sure the “you” in “you could have” is a different “you” than “we”.
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The notation looks complex, but underneath it's all just adding and multiplying.

Nothing complex

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Grand Theft Auto VI looks complex, but underneath it's all just ones and zeros and NAND
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"I invented a new algorithm"

"New algorithm, or fmadd?"

"... fmadd."

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as is practically all of transformer maths if you squint hard enough...
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deleted
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* a completely different "you" who spent countless hours gaining expertise on a wholly diverged life path
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Imagine reading the title again in the voice of the Asian Father Meme.

"You could have come up with Kimi Delta Attention, but you didn't, did you."

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Not even close for me too.
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I thought I was the only one.
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Thank goodness. There are dozens of us.
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dozens!!!
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possibly scores!!!
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Scores? More like "grosses"
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They lost me just describing the notation lol
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