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ipince

908 karma · joined October 1, 2010

Please contact me at rodrigo [dot] ipince [at] gmail. Always happy to connect!
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ipince··on Most people can't juggle one ball
> When I'm bored, I just whip out my balls and start having a play. And people watch, and sometimes join in.

Nice.

(I'm sure the author did this intentionally)

ipince··on Show HN: OneCLI – Vault for AI Agents in Rust
This seems to prevent your keys from being exfiltrated through prompt injection. But if your agent could've been prompt injected into giving out keys, then it can also be prompt injected into using the services it has (fake) keys for to the attacker's benefit.
ipince··on Start your meetings at 5 minutes past
MIT does this. Every class starts 5 mins past, and also ends 5 mins early.

We did this at Google too while I was there (only the started 5-mins past part). It works really well.

No need to change the Calendar events though. It's just implicit that we'll start 5-mins past. (Or, well, explicit in MIT's case).

ipince··on Fighting back against biometric surveillance at Wegmans
It's not only at groceries stores, it's everywhere. For example at TSA security line and (sometimes) when boarding flights at the gate. You can (and should) exercise your right to opt-out every single time, before that right is taken away. Omg I sound like Richard Stallman... anyway, he was right all along.
ipince··on Show HN: I built a dashboard to compare mortgage rates across 120 credit unions
But, moving to a new house doesn't necessarily mean you have to sell the old house. In fact, since you got such a good deal on the first house, you can probably rent it our for a profit, and said profit can help you pay whatever you need to pay to be able to move to a new house that's more expensive, yet similar in quality.
ipince··on Jakarta is now the biggest city in the world
> which I can't say about any other SEA language

maybe this doesn't qualify as "south east asian", but Korean is very easy to learn how to read too. It's not latin alphabet, but you only need to learn 20 symbols, and then everything is phonetic! you can have a lot of fun "reading" all the signs after you study a bit on the plane. Not as many loan words though

ipince··on Pixel 10 Phones
I agree the current models are all too big. I'm still using a Pixel 4 mainly because I don't want a bigger phone (oh, and free Google Photos storage of course).
ipince··on TODOs aren't for doing
But the second example there shouldn't be a TODO then, but just a NOTE (or regular comment).
ipince··on First American pope elected and will be known as Pope Leo XIV
Pope Bobby Frank I
ipince··on FTC bans hidden junk fees in hotel, event ticket prices
This is awesome. There's more to do, but it's a step in the right direction. This law should really apply to all merchants in all industries, as the original 2023 proposal stated (allegedly). Still, I'll take it.
ipince··on A lonely man in his 30s found welcome and community at spin class
What is "unlikely" about this?
ipince··on Show HN: Using Google Sheets as the back end/APIs of your app
I read your comment and your blog post and I still don't understand what happens when I put a link to a sheet in the text box and click Go.. what happens? You say your inputs and outputs are all in the sheet.. ok.. what does the button do? Are you just calling some API and giving it the sheet as the input, and then writing the output of the call back to the sheet? So then these Single Button Apps are just API endpoints that you're calling with sheets instead of json or, say Postman (if you want a nicer UI)?

I think I'm failing to see the point here :-/

ipince··on Show HN: Using Google Sheets as the back end/APIs of your app
Very opportune! I'm just building an app that needs to interface with some sort of spreadsheet. I was going to use Airtable because their API is just better than Google Sheet's, even though I kinda prefer Sheets. I'll give this a try this weekend and see how it goes!
ipince··on CitizenX: Invest in Citizenship
It really depends. In some cases, it is actually an investment, either in a company or in real estate. But the real estate may come with requirements, like specific areas in which the property must be, or with restrictions on selling it. In other cases, you can "donate" to a government-managed fund. In that case it's not really an investment cause you'll never see that money again.
ipince··on Americans are spending billions on stuff they forget to cancel
Autopay is evil. I have nothing on autopay.

Instead, I have a monthly reminder to pay my bills every month, with a list of all the bills/sites that need to be paid. There's 11 things in the list, but not all of them have a balance every month. I do this towards the end of the month (instead of at the beginning of the month), so that I can include rent in it too, and pay _everything_. It lets me see whether my spending is creeping up and gives me an opportunity to cancel useless stuff. It doesn't take long (5-30 mins depending on how detailed I'm being).

ipince··on Americans are spending billions on stuff they forget to cancel
Well, you don't have to check it _immediately_. I think as long as it's visible and you see in O(days) it would serve its purpose.
ipince··on Show HN: I made a website that color-codes the world by language
I was surprised by that too, but I don't think it makes sense at all. I'm curious as to what those categories are based off.
ipince··on Deep Learning Digs Deep: AI Unveils New Large-Scale Images in Peruvian Desert
These are the geoglyphs the paper identified:

https://ars.els-cdn.com/content/image/1-s2.0-S03054403230005...

ipince··on Show HN: Jellylade – Turn your screenshots into posts
Can't really use it on mobile :(
ipince··on New Orleans teenagers found a new proof of the Pythagorean Theorem
Ok, but those triangles aren't equilateral but isosceles :)
ipince··on New Orleans teenagers found a new proof of the Pythagorean Theorem
As a mathematician myself, I beg to differ. Proofs should be rigorous, and at the very least it should warrant a mention of this case.
ipince··on Ask HN: Side project of more than $2k monthly revenue? what's your project?
> I also found the conversion rate increased significantly after I made the homepage itself editable — thereby demo'ing the product without a login.

I just visited your homepage to check it out, but was greeted with a page that said "You can't edit this page" with a grayed out Edit button. And I'm not sure why, or what I should do so I am able to edit it (maybe sign up? but I wanted to see the demo before signing up).

ipince··on New Orleans teenagers found a new proof of the Pythagorean Theorem
Cool proof, though it doesn't consider the case where a=b. If so, the geometric series is non-converging since the ratio isn't less than 1. Geometrically, the construction wouldn't work because the sides A and C of the large "triangle" would be parallel to each other.
ipince··on Stripe announces new round of funding and plan to provide employee liquidity
> Unfortunately, most employees don't have the cash to do so.

I don't think using cash to pay the taxes is even an option.

> If/When they choose to sell their shares later on they must then pay a capital gains tax on the difference between the vest and sell price, effectively double-taxing them on the difference.

Why are they "double-taxed"? After the withholding, you get shares with a cost basis of X (the price of the share at the liquidity event). Any future capital gain/loss is based on that cost basis. Where is the double taxation coming from?

ipince··on Show HN: Names
I'm guessing just to make it more interesting, and have name drawings turn left/right, instead of just turning left. Note that n is the halfway point.
ipince··on Tell HN: Airbnb has no system in place when a host cancels on a renter
Well, I'd say it's because people that travel in groups can get a better deal by booking an Airbnb instead of booking multiple rooms in a hotel, and it also gives them the benefit of having shared space (living room) and a kitchen.

It also usually makes sense for longer stays, say a 30-day stay where the Airbnb's usually grant a ~20-30% discount, which makes them cheaper than a hotel.

Other than that, I agree there's little reason to choose an Airbnb over a hotel.

ipince··on Purchasing Power Parity: Fair pricing for SaaS products
How do you prevent people from spoofing or using VPNs to get a lower price? Or do you not, and let it be just another cost of doing business?
ipince··on Most buildings at MIT campus are remaining closed to the public
I don't want anyone to arrange any passes. It creates a barrier to entry, however small, that means fewer and fewer people will gain access to MIT and be inspired by it.
ipince··on Most buildings at MIT campus are remaining closed to the public
I tried this on Monday and it didn't work. Even if it did, this goes beyond access for alumni. I believe the campus should be open to everyone, as it's been for decades. It's one of MIT's values, as Reif himself said:

> Because openness is a central MIT value, our campus is open too. The vast majority of our buildings are open to the public and the campus has no visible perimeter; we are an aggressively ungated community that works around the clock and welcomes the world in.

ipince··on Most buildings at MIT campus are remaining closed to the public
True, it's not commonplace to have the buildings be open like that. But that's one of the things that set MIT apart, and it sucks to see it go away. I for one will do my best to see these policies overturned.
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