Hacker News

Top stories

Live mirror
30 storiesupdated just nowView source snapshot
  1. Human brain is two separate organs, Stanford Medicine-led research finds(stanford.edu ↗)
    44comments
  2. GPT-6 Astra Solves a WWI German Radio Cipher(prinzai.com ↗)
    22comments
  3. If math is more than proof, we need to better celebrate the rest of it(terrytao.wordpress.com ↗)
    18comments
  4. San Francisco Onion Futures Company(onionfutures.com ↗)
    59comments
  5. Android 17 is the first since 3.x to add new APIs without releasing to the AOSP(grapheneos.social ↗)
    384comments
  6. Typesafe-computer-use drives a Mac toward a goal for 1/50th of a cent per step(github.com/awlevin ↗)
    32comments
  7. Science Is Open Software(jepedersen.dk ↗)
    31comments
  8. SDCC – Small Device C Compiler(sourceforge.net ↗)
    16comments
  9. Cloudflare Quick Tunnels(cloudflare.com ↗)
    275comments
  10. NASA-IBM Lunar Foundation open-Source Geospatial AI Model(usra.edu ↗)
    2comments
  11. Why building a Rust LSP is hard(rust-glancer.github.io ↗)
    28comments
  12. Saving another 100TB of RAM(cloudflare.com ↗)
    66comments
  13. How to Write with an LLM(sockpuppet.org ↗)
    320comments
  14. You can run Git on object storage if you re-make packfiles(tigrisdata.com ↗)
    8comments
  15. Ctenophores: Wonders of Biology(quantamagazine.org ↗)
    4comments
  16. The first new cat species discovered in 100 years(nationalgeographic.com ↗)
    99comments
  17. How OpenAI Used Its Own LLMs to Design Its Jalapeño Chip(ieee.org ↗)
    81comments
  18. Goroutine Leak Profiles(go.dev ↗)
    2comments
  19. Veronese's Dogs(publicdomainreview.org ↗)
    discuss
  20. OpenJev(openjev.com ↗)
    258comments
  21. Show HN: Cactus Needle 3: 8-29MB automation models can match DeepSeek V4 Flash(cactuscompute.com ↗)
    88comments
  22. Photon-Emission-Guided Laser Fault Injection Enables RP2350 Secure Debug(ledger.com ↗)
    67comments
  23. Cache-to-Cache: Direct Semantic Communication Between LLMs (2025)(arxiv.org ↗)
    12comments
  24. Minimal Phone 2(minimalcompany.com ↗)
    218comments
  25. How come AI-related posts get so many points on HN?
    7comments
  26. The Farnese letter(simonklee.dk ↗)
    6comments
  27. Cyclomatic Complexity in C#(ndepend.com ↗)
    18comments
  28. Warez: The Infrastructure and Aesthetics of Piracy (2021)(archive.org ↗)
    54comments
  29. Inside ZCode: Silently uploading your Git history to the cloud(ferstar.org ↗)
    97comments
  30. Xcode 27.1 Beta Release Notes(developer.apple.com ↗)
    99comments

Lessons I wish I had been taught (1996)

136 pointsby 10y agoalumni.media.mit.edu
20 comments
10y agoHN ↗

Everyone in the audience has come to listen to your lecture with the secret hope of hearing their work mentioned.

People are narcissistic as hell.

10y agoHN ↗

Do you like it when I reply to your comment, thereby indicating that I read it, and by replying I further show that it was more important to me than many other comments I didn't reply to?

That's what you were hoping for when you wrote your reply, didn't you?

:-)

10y agoHN ↗

Surely your comment only works if you're 'famous' on HN.

10y agoHN ↗

So you think people comment and don't care if nobody ever responds to them? That they don't like getting reactions (not counting the negative ones - which of course according to you nobody cares about either, unless you are "famous" - because for some inexplicable reason(ing) only famous people like positive and fear negative responses)?

10y agoHN ↗

No, people do like get a response as you suggest.

I was trying to suggest as an analogue of the situation in the OP, that was being satirically commented on, that in order to properly mirror the situation your comment would need to come from someone with renown in the current locus. If people are really listening to the lecture hoping to be namechecked then it would be because they consider the lecturer to be a worthy in some way, surely?

10y agoHN ↗

The Feynman method is a nice hack. Good mental model.

10y agoHN ↗

I have a colleague who gives great talks. There are three reasons they are great. (1) The science is great. (2) He speaks engagingly and explains his (complex) material very well.(3) He always includes a citation and some very specific remarks on the single paper that I can read, to learn more. This third thing is the most important to the growth of the academic field, because solitary study is usually required to make progress, and nobody has time to read dozens of papers in a field that is not quite their own.

10y agoHN ↗

The link points to the middle of the article.

10y agoHN ↗

Yes, but if you're trying to get around the duplicate detector, you can usually just append a query string like '?2'. Or, if the server tries to interpret query strings and that would be bad, it'd be friendlier to the read to instead use a non-existent div like '#2'. Bypasses the duplicate detector, specifies how many resubmissions, and doesn't jump the reader somewhere in the article. (Although I should note that I think the one OP chose is one of the two best ones, so no real harm done.)

10y agoHN ↗

Very odd to see this here. I had recently been Googling the writings of the late professor. He as a few lists like this out there.

10y agoHN ↗

"An audience is like a herd of cows, moving slowly in the direction they are being driven towards. If we make one point, we have a good chance that the audience will take the right direction; if we make several points, then the cows will scatter all over the field."

Then proceeds to make several points. Good stuff, though. Rule, exception, moo.

10y agoHN ↗

He was talking about a lecture. A webpage in this form is a static entity that you can go to and come back from multiple times and leave with as many thoughts.

10y agoHN ↗

This was brilliant. Thanks for (re)posting it.

I had never heard of Rota before. I'll have to read more about him. It's a bit sad that he lived for only a couple years after this lecture, dying at the relatively young age of 66. (Wikipedia)

10y agoHN ↗

Rota was quite the celebrity, at least among students. In addition to advanced classes in his specialty, he taught differential equations, which was required for at least two thirds of undergraduates, so everyone knew him. Each semester he would pay a diffeq student to have a can of Coke ready for him at each class, so he could drink it while he lectured. Also, anyone who asked a question during lecture (a room of ~350 people) would get a free Hershey's bar after class. That he had worked in (and sometimes taught) philosophy as well as math was kind of the icing on the cake.

There was also a persistent rumor that he'd once given a diffeq multiple choice exam (scored like the SAT, so that a fraction of a point was deducted for every wrong answer) on which the average score was 1 or 2 percent, ie simply handing in a blank exam would probably have given a passing score. But I never confirmed that.

10y agoHN ↗

Every mathematician has only a few tricks

Can anyone in the know illuminate this with some examples?

10y agoHN ↗

My favorite complex analysis book makes repeated use of the same infinite sum throughout. He's probably referring to such things as well as logical tactics. There are even books written on this sort of thing. I think you can find them as "tactics for problem solving" or some such.

10y agoHN ↗

I found number 10 (old age) interesting in that I'm approaching it, hehe. I understood what he wrote for the most part, but could have used a bit more exposition. Anyone want to try describing it, perhaps from another angle?