• 26 Posts
  • 301 Comments
Joined 1 year ago
cake
Cake day: June 4th, 2023

help-circle

  • Wait till you find out about some of the nazis etc who have contributed to the linux kernel. One guy even murdered his wife! And Linus himself is… well let’s just say some of his behavior is “problematic”. Oh and Richard Stallman my lord. Lemmy/AP has some interesting people as well. Nostr is an open protocol worked on by dozens of people. I would also question the motives of a “journalist” who makes it their business to dox anonymous developers, especially people developing software that could get them imprisoned in certain countries.




  • Programming. Challenging and creative in a way that is different than art & music but still somehow similar. I find it almost relaxing sometimes. Python is a great first language and you can go from no knowledge whatsoever to a working program that does something genuinely useful in an hour, like scraping a website and showing you some data from it. Mastery takes years.

    If you genuinely enjoy programming, you can legitimately change the world with your knowledge. There are tons of open source projects out there which benefit humanity yet don’t have enough development talent. It’s one thing to volunteer your time and see a good outcome from it, it’s another to volunteer your time to build a system which guarantees good outcomes for many people over long time periods and get to see that system grow and get used by people.




  • There are two factors at play here which have to meet in the middle: where is the most efficient place to produce the product and what is the most efficient way to ship the product? The answer to the first question is: wherever has local access to the resources (people, iron ore, etc) and energy required and has the scale required to efficiently build those products. The more cars your country produces, the bigger your factories are going to be, and the more efficiently you can make cars. The answer to the second is by sea. Always by sea. Boats are vastly more efficient than rail, truck, anything.

    from: https://www.reddit.com/r/explainlikeimfive/comments/jzhebc/eli5_why_are_ships_more_efficient_at_transporting/

    Container ships are reallyyyy big and reallyyy slow so they experience relatively low drag

    Drag on a plane is high, they have two massive jet engines that try to push them through the air burning literal tons of fuel to do so. Obviously not the best if you want to be efficient.

    Drag on a train scales with the weight of the train. A long heavy train will have more rolling resistance that sucks away energy from it. You can’t scale this down without going through and making your wheels harder so they deform less, but you already have steel wheels on steel rails so you’re not going to get much better.

    Drag on a ship scales with the surface area of the ship that is touching the water, putting more weight on a ship causes a bit more of the surface to touch the water, but not very much. Moving an empty ship is going to use a surprisingly large amount of fuel because the drag is pretty similar, but your fuel consumption isn’t going to go up linearly with load like it would for a train.

    Consider something like a Maersk Triple E, it carries over 18,000 20 foot containers. It can get them up to 23 knots (26 mph) but generally runs at 16 knots for efficiency and does this with just 80,000 HP of engine capacity. Those 18,000 containers would turn into a train 68 miles long! With 140,000 tons available for cargo, that’s just 0.57 HP/ton at full speed, and significantly less at the lower cruising speed(where the ship is built to be efficient). Trains will generally run around 1 HP/ton so this big ass cargo ship is using half to a third as much power to move its cargo.

    The downside of this is that it takes 6-8 weeks for a ship to go from China to California, but the upside is that it did that with a crew of just 13 and just had a big diesel running in its happy spot the whole time.


  • So let them compete, isn’t that the idea? Countries and economies can compete with each other just like companies do. China can subsidize their EVs, America can subsidize its defense industry and corn, Europe can subsidize cheese and wine or whatever it is they make, each country specializes and offers the best product at the cheapest prices for consumers. Or make WTO have more ‘stick’ and less carrot so we can make countries stop subsidizing their own industries.

    Either way, a return to trade tariffs and isolationism doesn’t sound great to me. It sounds like everything getting more expensive and less efficient (and therefore, more environmentally wasteful). It also sounds like countries being less dependent on each other, which means less reason to not go to war. We live in a very rare, peaceful time in human history. International trade (and massive technological/scientific breakthroughs) are a major part of that.




  • Millions for development? Do you have any sources? I’d like to read about it. Thanks

    Watching videos from the most recent Bitcoin conference is a good way to get updated on recent development changes to the protocol, lightning included. Bitcoin Magazine if you prefer reading to watching. Github if you prefer reading code to words.

    I don’t have a specific source to cite here, just am generally aware of what’s going on in the bitcoin space. Lightning labs is the main company building the protocol, they’ve raised 86 million in funding, though not this year. There’s dozens of lightning wallets, some of which are supported/published by companies like ACINQ whose investment capital measures in the tens of millions. Tons of stuff is being built on it. And more payment providers are integrating lightning: Strike and Cash App are the two major ones. Coinbase recently announced they will be adding support for it, Kraken and most other exchanges already support it. There’s a lot of FUD about lightning, there are some valid critiques to be made for it as a “universal scaling strategy”, but generally speaking, it works well and does what it’s supposed to and has plenty of room to scale. There are proposals (channel factories etc) which will massively help with scaling as well.

    Likely there will be more than one L2 in the future to optimize for different use cases. But for large orgs who frequently need to move liquidity around, solutions like lightning are excellent. They can settle their accounts with other orgs and their customers instantly. Think banks, online retailers, online marketplaces, etc. This leaves less money “in flight” and at risk. And it can also be used for micro-transactions for everyday people. A bunch of funding just got allocated to Ark as well, which is another L2 solution similar to but different from lightning. Fedimint is another project/proposal to look at if you are researching all this.



  • makeasnek@lemmy.mltoAsklemmy@lemmy.mlIs Craigslist Dying?
    link
    fedilink
    English
    arrow-up
    11
    ·
    edit-2
    3 days ago

    It would be nice to have a decentralized or federated buy/sell platform that replaces craigslist. Facebook marketplace has absolutely eaten craigslist for lunch, and I hate that I have to use it to sell stuff, but there are few viable alternatives for local sales.

    eBay is great until you want to sell a $300 iPhone and don’t want to mess with buyer return fraud which is rampant on that platform (and most custodial payment services like PayPal). I don’t sell anything on eBay for over >$100, got burned too many times.


  • You can either increase blocksize (and therefore decrease decentralization) or build L2s. Look at ETH with their big, frequent blocks. You can run a Bitcoin node on a 10 year old laptop, good luck running an Eth node with those specs. You need at least 1TB of space, and it’s gotta be SSD, and you need a pretty fast processor. Which is why many Eth nodes are hosted in corporate datacenters, over half the network. You can split hairs over what counts as a “node” etc but the end result is the same: increased centralization due to large chain size/requirements.

    Monero doesn’t need L2s yet because it doesn’t have the transaction load to fill up available chain space enough to impact decentralization. Long-term, we cannot store all transactions on every node and do that forever. Small txs do not belong on chain. I love XMRs approach to privacy, it will need L2s at some point. Or pruning, which comes with some significant tradeoffs.


  • Lightning is a terrible protocol. The Lightning devs themselves state that it’s basically unusable and you shouldn’t even try sending transactions valued more than a few hundred dollars

    FUD. I use lightning on a daily basis, it’s getting continual development, and millions are still being poured into development efforts. Some devs stopped working on it and now more new devs are involved, which is common with long-lived OSS projects. You can use it to send money to anybody on planet earth with a cellphone and a halfway reliable internet connection. In under a second. For a penny in fees. Try that with a bank wire. It’s a non-centrally controlled network, like OPs post is about. It does what it does very well, and it has been live and growing for years. Over a few hundred USD, you’re probably better off with a main-chain tx anyways as fees are flat instead of % based.

    If you tried selling all that bitcoin, the price would tank

    Yes that’s how market caps work. It doesn’t change that it’s a massive market cap.



  • Replying to this comment so people don’t get put off by it. Nostr has an optional feature where you can tip other users using Bitcoin lightning. So if you like their post, you can send them .001c or $100 or whatever you want. You don’t have to use it though. It’s valuable IMO as a way for content creators to get paid and will be a key driver of content creators choosing to use it over other platforms, but to each their own. You can also dedicate a % of your tips to your nostr relay or app to supporting hosting and development.

    Crypto is full of garbage and scams, Nostr uses Bitcoin. Bitcoin has been around for 15 years without a single hour of downtime, a single hack, or a single broken promise. Whatever you don’t like about “crypto” is probably actually other stuff that isn’t Bitcoin. Bitcoin is a way to transfer coins around the world quickly, and it works, and nobody can print away the currency’s value by inflating the supply. It has a trillion dollar market cap for a reason, which places it in the top 25 countries by GDP.


  • You don’t have to pay relays to use nostr. Been using Nostr for a while and love it, it’s an underlying protocol like AP is for Lemmy, Kbin, mastodon, etc. The main “interface” for it right now is as a twitter clone.

    You don’t lose your identity if your instance shuts down which is a major pro (Bluesky also has this advantage over AP). The UX is a little less polished than Mastodon but I find the underlying tech concepts more solid, privacy respecting, and censorship-resistant. For example, DMs are automatically encrypted so relay operators can’t read them.


  • Bannability is similar to lemmy. Each “instance” (or “relay” in nostr words) can decide what content/users can live on their relay. The difference is that you are usually connected to multiple relays. So if you want to follow somebody who is banned by other relays, nobody can take that choice away from you. Likewise, nobody can stop you from publishing, though your reach may be limited by relays sharing blocklists etc.

    There are some right users there just as there are on any social media network. You can just click block and move on and/or pick relays with stronger moderation policies. If Lemmy has a “left” tilt, Nostr has a “libertarian right” tilt. But over time it’s expanding and becoming more generalized, just like how Lemmy isn’t 100% tankies now.