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Jeremy Kun

@jeremykun.com.bsky.social

Portland-based mathematician and software engineer. Building a homomorphic encryption compiler at Google. https://jeremykun.com https://pimbook.org https://pmfpbook.org https://buttondown.email/j2kun https://heir.dev

1,194 Followers  |  367 Following  |  920 Posts  |  Joined: 18.05.2023  |  2.3161

Latest posts by jeremykun.com on Bluesky

I like toml but I'm too used to yaml and it's upsetting

04.08.2025 01:53 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Anyone got a nice AHK shortcut for this on desktop?

03.08.2025 23:49 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
What’s a technology that you think is overhyped?

I’m going to give a sideways answer to this, which is that the venture capital business model needs to be understood as requiring hype. You can go back to the Netscape IPO, and that was the proof point that made venture capital the financial lifeblood of the tech industry.

Venture capital looks at valuations and growth, not necessarily at profit or revenue. So you don’t actually have to invest in technology that works, or that even makes a profit, you simply have to have a narrative that is compelling enough to float those valuations. So you see this repetitive and exhausting hype cycle as a feature in this industry. A couple of years ago, you would have been asking me about the metaverse, then last year, you would have asked me about Web3 and crypto, and for each of these inflection points there’s an Andreessen Horowitz manifesto.

It’s not simply that one piece of technology is overhyped, it’s that hype is a necessary ingredient of the current business ecosystem of the tech industry. We should examine how often the financial incentive for hype is rewarded without any real social returns, without any meaningful progress in technology, without these tools and services and worlds ever actually manifesting. That’s key to understanding the growing chasm between the narrative of techno-optimists and the reality of our tech-encumbered world.

What’s a technology that you think is overhyped? I’m going to give a sideways answer to this, which is that the venture capital business model needs to be understood as requiring hype. You can go back to the Netscape IPO, and that was the proof point that made venture capital the financial lifeblood of the tech industry. Venture capital looks at valuations and growth, not necessarily at profit or revenue. So you don’t actually have to invest in technology that works, or that even makes a profit, you simply have to have a narrative that is compelling enough to float those valuations. So you see this repetitive and exhausting hype cycle as a feature in this industry. A couple of years ago, you would have been asking me about the metaverse, then last year, you would have asked me about Web3 and crypto, and for each of these inflection points there’s an Andreessen Horowitz manifesto. It’s not simply that one piece of technology is overhyped, it’s that hype is a necessary ingredient of the current business ecosystem of the tech industry. We should examine how often the financial incentive for hype is rewarded without any real social returns, without any meaningful progress in technology, without these tools and services and worlds ever actually manifesting. That’s key to understanding the growing chasm between the narrative of techno-optimists and the reality of our tech-encumbered world.

Stand by this: www.politico.com/newsletters/...

19.02.2025 16:42 β€” πŸ‘ 9816    πŸ” 3216    πŸ’¬ 166    πŸ“Œ 358

It has become painfully clear how little Republicans care about being exposed as hypocrites, as it has no effect on their ability to get what they want.

31.07.2025 03:39 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

That presupposes the ability for LLM designers and service hosts to strictly control an LLM's behavior and guarantee some sort of reliability in its responses.

31.07.2025 03:36 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Maybe with enough brownies and macaroons you could buy your way into an exception 😎

29.07.2025 21:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Nice try, China.

29.07.2025 21:49 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Is... this normal? I would not want to use PreTeXt if the installation is so convoluted or brittle it needs Docker.

29.07.2025 21:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Of course, the problem here is the time constraint. You don't have time to really tell if they can do all these tasks (explain/extend/debug) in an interview.

Writing the code is a great proxy for all of these things at once.

29.07.2025 21:28 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

My hot take: this is a bad idea because people are too good at bullshitting their way through an explanation once the code is written, and those people end up functioning poorly in open-ended situations. I want to work with people who can still function when a tool fails.

29.07.2025 21:28 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

My 1yo helps load the silverware. Never too young πŸ˜‰

29.07.2025 21:11 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Whoever said a broken clock is right twice a day just isn't imaginative enough in the ways things can break

29.07.2025 17:50 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Netflix n correlate?

29.07.2025 01:03 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1

I was certainly not the first to say it πŸ˜‚

28.07.2025 15:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

This.

I cannot emphasize enough how influencer and hustle culture have completely changed the internet from "weird and wonderful things people make for the heck of it" to algorithm chasing joylessness.

28.07.2025 13:31 β€” πŸ‘ 4023    πŸ” 1561    πŸ’¬ 13    πŸ“Œ 14

A metaphor for silicon valley in general, many have said

28.07.2025 02:05 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
Tech Promised Everything. Did it deliver? | Scott Hanselman | TEDxPortland
YouTube video by TEDx Talks Tech Promised Everything. Did it deliver? | Scott Hanselman | TEDxPortland

I just wanted to say, I’m probably more proud of this Ted talk than just about anything I’ve ever done so I’m gonna be absolutely useless for the next couple of weeks as I promote the shit out of this because I want you to watch it because it matters in the moment we are in youtu.be/dVG8W-0p6vg

17.07.2025 20:37 β€” πŸ‘ 980    πŸ” 270    πŸ’¬ 82    πŸ“Œ 91

Ew

27.07.2025 13:58 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Most of the internet used to be like this. This is actually the default, it took companies enclosing the internet and adding weird, soul-killing incentives to make people behave the way they do now. In a way, there is truly nothing special about Wikipedia except that it survived longer.

26.07.2025 17:28 β€” πŸ‘ 22363    πŸ” 8016    πŸ’¬ 146    πŸ“Œ 158

Need a better name than blogosphere. Something that connotes "rewilding" a web sanitized by algorithmic feeds and ads.

27.07.2025 00:02 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
Constitution Breakdown #1: Nikole Hannah-Jones Podcast Episode Β· 99% Invisible Β· 07/25/2025 · Bonus Β· 1h 20m

Our first episode of the @99pi.org Constitution Breakdown is out! @romanmars.bsky.social & I had a great conversation w/ Nikole Hannah-Jones about the Preamble, plus standing armies & unlawful posses. Listen, subscribe & share. Thanks for all your support! podcasts.apple.com/us/podcast/c...

25.07.2025 17:58 β€” πŸ‘ 108    πŸ” 29    πŸ’¬ 4    πŸ“Œ 0

Defcon 26 will have an app for identifying which sites/apps are vibe-coded as a means for identifying targets

26.07.2025 01:07 β€” πŸ‘ 7    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

I hope to do this again next year, around the same time. So if you're interested in joining and you live close to Portland, let me know and I can put you on the list.

25.07.2025 20:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Since we only had six talks, after lunch we switched to a hackathon for the HEIR compiler (https://heir.dev), and ended the day with a happy hour.

25.07.2025 20:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I wanted an environment where we could be open about our concerns, admit to things we don't know, and express burgeoning or unrefined opinions. Despite competition among companies, we're all on the same team in the broader effort to make privacy practical.

25.07.2025 20:57 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

About 18 people attended. In the interest of fostering community, I encouraged people to give informal, even "spicy" talks, nothing was recorded, and there were extended breaks for discussion.

25.07.2025 20:57 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Since I had been having lunch with various subsets of the community, I figured it was about time to get us all in a room together.

25.07.2025 20:57 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Though Portland is a small city, it's becoming a hub for homomorphic encryption. Intel and Google both have a presence here, as well as the hardware startup Niobium, and a few individuals from other companies who happen to be based here.

25.07.2025 20:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

On Monday, July 14th 2025, I hosted a mini-workshop on homomorphic encryption at Google's Portland, Oregon office.

Archived at: https://www.jeremykun.com/shortform/2025-07-25-0956/

25.07.2025 20:57 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Finite fields can have many dimensions, sure.

23.07.2025 19:56 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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