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dperrin commented on Adding an imaginary unit to a finite field   johndcook.com/blog/2025/1... · Posted by u/ibobev
c1ccccc1 · 4 months ago
Why is that? My guess would be that you could adjoin an i all the time to the p^n field and get the p^2n field, as long as you had p = 4k + 3. But that's admittedly based on approximately zero thinking.

EDIT: Looking things up indicates that if n is even, there's already a square root of -1 in the field, so we can't add another. So now I believe the 1/4 of the time thing you mentioned, and can't see how that's wrong.

dperrin · 4 months ago
Spitballing here, but I suspect it's a density thing. If you are considering all prime powers up to some bound N, then the density of prime powers (edit: of size p^n with n > 1) approaches 0 as N tends to infinity. So rather than things being 1/4 like our intuition says, it should unintuitively be 1/2. I haven't given this much thought, but I suspect this based on checking some examples in Sage.
dperrin commented on Do not download the app, use the website   idiallo.com/blog/dont-dow... · Posted by u/foxfired
fugalfervor · 7 months ago
That's opting out of notificationse which is subtly different. I'm advocating for something a little different. See if your mind feels less scattered if you don't have any notifications at all. Then allow back in the ones that you feel are essential. A lot of the notifications we get feel important, but aren't.
dperrin · 7 months ago
I've never considered something like this before. I like the way you've phrased this too. I'm going to give this a shot for a few weeks.
dperrin commented on Sleeping beauty Bitcoin wallets wake up after 14 years to the tune of $2B   marketwatch.com/story/sle... · Posted by u/aorloff
kristopolous · 8 months ago
People are actively doing it. Mostly using clore.ai on their 4090x bundles.

I used to work in the gpu rental space up to about a month ago.

I talked to multiple people dropping hundreds of thousands of dollars on looking for those keys.

I'd put house odds at say 20:1 that someone cracked it over someone holding for 14 years and deciding now is strike time.

Also if it's a true crack, then Bitcoin price could collapse swiftly if someone just snatched a wallet for 200k of compute or whatever.

That's always been the real existential risk. I talked about it as the DES problem over a decade ago. Let's see if this is it

dperrin · 8 months ago
Just speculating here, but isn't it quite possible someone wasn't intentionally sitting on it for 14 years and instead just couldn't access it? For example, if they've been sitting in prison this whole time. Something like that seems (statistically anyway) more plausible to me than getting lucky on guessing a key.
dperrin commented on I don't think I can trust Google as my search engine anymore   androidpolice.com/google-... · Posted by u/sundaybsunday
apples_oranges · a year ago
I find it difficult to trust these (recurring) Kagi is so much better comments. Because a) no one I personally know ever mentions it and b) everyone seems satisfied with Google.
dperrin · a year ago
They recently gave out some 3-month free trial vouchers for users to give to friends. I have a spare one that I’d be happy to share with you if you’d like. Though I don’t know the best way to get it to you since I don’t think HN has DM functionality. Username is dperrin.01 on Signal if you’d like it.
dperrin commented on Show HN: I made a app that uses NFC as a physical switch to block distractions   foqos.app... · Posted by u/awaseem
dperrin · a year ago
Cool idea! Any chance you’ll make it available in New Zealand? I’d love to try this out.

Dead Comment

dperrin commented on Bike Manufacturers Are Making Bikes Less Repairable   ifixit.com/News/101675/bi... · Posted by u/LorenDB
oulipo · a year ago
Founder of Gouach, the repairable (and fireproof!) e-bike battery mentioned in the article, happy to answer any question!

- we salvaged 100s of discarded e-bike batteries

- we found that 90% of components were like new

- batteries were thrown away because of the spot-welding and the glue which prevents repairability

- we spent 2 years (and 5 patents) to design a robust, safe, and easy to assemble system that requires nothing but a screwdriver

Our batteries have been in use since 2 years in the streets of France, on micro-mobility e-bikes, in the harshest possible conditions (rain, snow, cold, heat, shocks), and we're very happy with their performances!

We're now opening it to the general public (for conversion kits, and to replace old batteries that are no longer manufactured)

We plan to open-source at least part of the embedded software, so people can write extensions (to let their battery "talk" with any e-bike system, and share it — using WASM embeddable code — to other people on the web!)

Let's fight planned obsolescence!

(and if you're looking for a new battery, there's 25% off on https://get.gouach.com)

dperrin · a year ago
In the thermal runaway video, you have steel bars holding the battery down. Is there risk of the battery casing blowing apart without that steel holding it down?
dperrin commented on Apple Shares Full iPhone 16 and iPhone 16 Pro Repair Manuals   macrumors.com/2024/09/20/... · Posted by u/stalfosknight
makeitdouble · a year ago
Do you expect your iPhone 16 battery press tool to still be useful in 2 phone generations ? How many times do you see yourself replacing the iPhone 16's battery ?

If Apple was also promising to keep the same process for the next 7 years I'd see a point to this, but this of course not the case.

dperrin · a year ago
> Do you expect your iPhone 16 battery press tool to still be useful in 2 phone generations ? How many times do you see yourself replacing the iPhone 16's battery ?

Lots of my bike tools I have will take over a decade to get my money back on my stuff alone. But I get to do something I mostly enjoy. I can also help out friends/acquaintances when they need it. The same goes for this.

dperrin commented on Kagi Assistant   blog.kagi.com/announcing-... · Posted by u/darthShadow
__jonas · 2 years ago
I really wanted to like Kagi, I'm onboard with paying for search, but I've had had a big issue with its speed when doing the trial to be honest, am I the only one bothered by this?

Perhaps this is because I'm in Europe and it's faster in the US? A search request to Kagi seems to take around two seconds for me (shows as ~1s in the Kagi UI), it just feels really unpleasant compared to Google, I'm used to firing of a couple searches with different wording / terms and go through results quickly, feels like I'm being held back.

Maybe I'm spoiled, but if I'm paying for search I would really like it to be at least on par with Google, the search result quality seems ok from what I can tell, lenses don't really make sense to me, they seem to filter out too many results I would have liked to actually see, but the customization like adjusting the rating of individual websites is fantastic.

If they can manage to bring the speed to match that of Google, I'd be happy to pay for it I think.

dperrin · 2 years ago
Sorry to hear your experience hasn’t been great. I’ve been using it from NZ for the last six months and haven’t noticed any speed differences. Just did trips to Canada and the US recently and I didn’t notice any difference in performance.
dperrin commented on Is the $139 Amazon Prime Subscription Still Worth It?   wsj.com/tech/personal-tec... · Posted by u/mudil
maxglute · 2 years ago
I hear my US friends bitching about Prime service degradation. Meanwhile it's still ~35 USD/YR in Canada and next day delivery has been increasingly reliable. I haven't compared cataglue on prime videos, maybe we have access to less content. But still hard deal to beat.
dperrin · 2 years ago
Are you a student? Price is showing as 99 CAD/yr otherwise.

u/dperrin

KarmaCake day30July 2, 2023View Original