ThanksForAllTheFish

@ThanksForAllTheFish@sh.itjust.works

• ⁨Comment⁩ on ⁨This seat reservation doesn't reserve any seats⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  In the UK you can get on a train without booking a ticket for that train, this is either an open return or just a day pass. The train company has no idea how many seats will be taken or how many people will get on the train. So say it’s a 10 carriage train. Every seat is taken by someone, reserved or unreserved, and theres not a bit of standing room anywhere (this is very common). Which person sat on a reserved red light indicator seat should you kick out? And how do you know they didn’t reserve that seat specifically before you do that? Or do you kick someone specific out of a green lit non-reserved seat, with thier proof that the seat is not reserved and they are allowed to sit there, and your proof that you dont even have that specific seat reserved. It will also be the old people and small children sat down, and you won’t really be popular if you make them stand. Yeah your not sitting if you have this ticket. You’ll likely be stood by the entrance door for 3 hours instead.

• ⁨Comment⁩ on ⁨When leftists say "landlord are parasites" or similar dislike of landlords, do they also mean the people that own like a couple of houses as an investment, or only the big landlords?⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  Wouldn’t you be benefiting from your friends? It’s ok for a little bit, but if they live there permanently then they will pay off your mortgage and have nothing to show for it themselves. That sort of thing might build resentment long term. Though in the short term you both benefit.

  But as I’m sure you’re aware, any money issues may sour the relationship. Even just having a formal contract with exchange of money could change the dynamic drastically.

• ⁨Comment⁩ on ⁨Phones have unique phone numbers, why dont computers have unique computer-numbers?⁩ ⁨⁨8⁩ ⁨months⁩ ago⁩:

  My understanding with phones is that you phone your own provider, who then looks up the provider of the number you’re calling based on country code, provider or area code prefixes. Providers will “peer” with each other to route calls over the most cost efficient path. So the other sides provider is responsible for getting it to the right destination phone within thier own customer network. Theres no authentication from the sending party on a protocol level, this is why scammers can spoof as any phone number.

  I believe that IP routing does something similar, the IP data is handed over to possibly multiple providers until it reaches its destination provider. The blocks of ip addresses are published as linked to an Autonomous System and each autonomous system has an owner/provider. The source is not authenticated at a protocol level which is why we need client and server certificates.

  In DNS you go to the root TLD servers and ask where the .com resolver is. The .com resolver has a list of mappings of authoritative name servers to domains. So example.com may have an authoritative NS of 1.2.3.4 who you can go to and ask what IP test.example.com is hosted on. The authoritative name server is the source of truth for that domain and other servers cache it to prevent overloading. You may check with the authoritative NS if you want but it may be slower to respond than your local NS. Again DNS is not authenticated at the protocol level so we need server certificates to prove that the device behind the IP serving you actually is allowed to serve you test.example.com.