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Time is a circle (lemmy.world)
submitted 13 hours ago by The_Picard_Maneuver@lemmy.world to c/memes@lemmy.world
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[-] Wes4Humanity@lemm.ee 18 points 8 hours ago

I want to be done with car shaped cars... I want a self driving room to show up...I want to say "send me a living room/bedroom/office/whatever," and have a room shaped vehicle show up to get me. I want that vehicle to drive me to the nearest train tracks and hop on the tracks itself and then zoom me to the nearest hyper loop and jump itself on that to zip me across the country in an hour... Join up with other "rooms" as you go to create a typical looking train

[-] ByteOnBikes@slrpnk.net 8 points 7 hours ago

Having slept in a train bed that has a bathroom and was 3 doors down from a kitchen, it's wild that we looked at a car and went, "That's what I want."

[-] el_bhm@lemm.ee 2 points 5 hours ago

Jetsons theme starts playing

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[-] Iron_Lynx@lemmy.world 38 points 10 hours ago

Take any tech bro take on transit, and if you try to perfect it, you'll almost always end up with a train.

[-] brucethemoose@lemmy.world 4 points 8 hours ago* (last edited 8 hours ago)

What about the moon? Surely not...

Well, ultimately space elevators are the most energy efficient way to escape Earth's gravity well. And once we have one of those, mind as well build a mass driver at the top so rockets don't have to carry so much of their own mass. Then we can build a laser-based photonic sail on the other end to decelerate the cars and make them even lighter/faster, and then build track at the bottom...

Train.

What about interstellar travel?

Well, ultimately wormholes are way more efficient than any subluminal travel once the infrastructure to build them is in place: https://www.orionsarm.com/eg-article/48545a0f6352a

So we control traffic on each side carefully. In fact, we could just suspend a really strong wire on either end...

Yep. Train.

[-] CarbonIceDragon@pawb.social 6 points 10 hours ago

What about those giant quadcopter type things they keep wanting to build to fly from building rooftops in cities for some reason?

[-] Iron_Lynx@lemmy.world 3 points 9 hours ago

Within cities?

Look, aircraft are Hella noisy and if stuff goes bad, they'll smash into buildings. Using them for intra-urban transit is not safe. Besides, I don't know if multicopters can autorotate, which only adds to the safety concerns.

So why not bring it slightly closer to the ground. Maybe put the transportation device on a bridge or viaduct. And while you could put some stairs up from the streets, you may even choose to link buildings into them directly. Most tall buildings have lifts, after all.

Next, giving each building its own link into the system would be excessive. You can achieve 90 percent of the utility if you have larger entry hubs for multiple buildings, and expect people to walk the last mile.

Anyway, back to the vehicle, since a vehicle for a handful of people is rather inefficient, why not build the vehicles for many dozens of people? Why not build it to connect multiple vehicles? If you run, like, four of these, every five minutes, most people will be able to walk up any time and just go.

And to make that movement more efficient, let's have our vehicles roll along a specifically designed path, optimised for minimal friction by using hard wheels on a hard surface.

There, I replaced the quadcopters with a train.

[-] CarbonIceDragon@pawb.social 2 points 8 hours ago

Oh I mean you can replace them, but when nothing of the original system remains you're not so much optimizing the idea as throwing it out to use trains instead

[-] SkyezOpen@lemmy.world 3 points 9 hours ago

If they really want rooftop travel, a gondola system could probably work.

[-] Iron_Lynx@lemmy.world 2 points 8 hours ago* (last edited 8 hours ago)

Works assuming the rooftops are roughly in line of sight. That is something I assumed not to be definitively true in the other comment..

[-] Kolanaki@yiffit.net 3 points 6 hours ago* (last edited 6 hours ago)

I just keep thinking about the automated robots that have existed since I was a child that just followed a painted line on the ground. Those operate around people, other robots and vehicles in ways similar to traffic on a public road, and yet they have none of the issues autonomous cars have. They're far, far more simple.

[-] kogasa@programming.dev 1 points 4 hours ago

If a line-following robot bumps into a 3 year old, it might knock them over. It's a different situation with high speed 2 ton death machines

[-] HeyThisIsntTheYMCA@lemmy.world 7 points 7 hours ago

I think what they want is trains with individual private cars that can automatically choose the tracks you want by selecting a destination. Which would be fucking awesome it's how I thought cars worked when I was 4, I swear all the steering wheel did was change lanes (my folks were good drivers I guess).

[-] FireRetardant@lemmy.world 69 points 12 hours ago

How many times will techbros reinvent the train/tram until North America finally starts laying down rails?

[-] possiblylinux127@lemmy.zip 3 points 7 hours ago

We don't even need big trail routes. Just put in a small trolley that stops throughout a city. It doesn't need to go everywhere but it could do business areas and tourist destinations

[-] iturnedintoanewt@lemm.ee 18 points 11 hours ago

I love this Adam Something classic where they keep optimizing the tech bro idea until it turns into Thomas the Engine

https://www.youtube.com/watch?v=5eHWVjUAukU

[-] spicytuna62@lemmy.world 19 points 11 hours ago

Don't even need to lay down rails. The rails are already there. Built by Chinese slave labor 150 years ago. We need merely to seize them.

Or just cut a check to the freight companies.

[-] FireRetardant@lemmy.world 19 points 11 hours ago

Many cities paved over their tram lines. Sometimes they poke through during road work. We had trams in nearly every city 100 years ago yet today people tell me we can't afford it or our population is too small to support it. If we could do it 100 years ago we could certainly do it now.

[-] BakerBagel@midwest.social 8 points 10 hours ago

Even the rural college town my grandma grew up in had tram lines running down the main streets in the 30's and to both colleges. If a city had more than 20,000 residents 100 years ago, they probably had a tram system that was pulled up at GM's behest.

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[-] SkunkWorkz@lemmy.world 8 points 10 hours ago

The US has so much tarmac they don’t even need rails just turn some of that tarmac into dedicated bus lanes. And put one of these long boys on them

longest articulated bus

[-] HeyThisIsntTheYMCA@lemmy.world 4 points 7 hours ago

Just lay rails in the lane. Turn it into, I dunno, a fuck you I'm a train lane

[-] possiblylinux127@lemmy.zip 1 points 7 hours ago

The danger with trains is that they have low traction.

[-] FireRetardant@lemmy.world 5 points 10 hours ago

Bus lanes are too easy for the next politician to remove bus priority and allow cars back into the lane. At least with rails it's a lot more costly to remove the route. Busses also still contribute to microplastics and tire waste compared to railed trams. Trams are also easier to automate which can make employing drivers and adding trams to lines less difficult compared to buses. The rails are also more effecient as there is less friction.

I'd defintely take BRT over no transit but many cities are dense enough to justify electrified trams.

[-] GissaMittJobb@lemmy.ml 7 points 11 hours ago

On account of the election, you can basically be sure that passenger rail will not happen to any extent any time soon. Expect bigger cars and more highways instead, as this is what is outlined in Project 2025.

Incredibly bleak.

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[-] iAvicenna@lemmy.world 11 points 9 hours ago

next up in the agenda: what if we make cars larger so more people can travel in them simultaneously

[-] daniskarma@lemmy.dbzer0.com 2 points 7 hours ago

Main selling point of cars is that you don't have to share them with strangers.

[-] possiblylinux127@lemmy.zip 3 points 7 hours ago* (last edited 7 hours ago)

Let's bring back trams and trollies

[-] ByteOnBikes@slrpnk.net 2 points 7 hours ago

There's trolleys in my city. I love them riding on their little tracks and I go choo choo.

[-] Sam_Bass@lemmy.world 3 points 7 hours ago

time is a straight line. the circle is only for the easing of the incomprehending mind

[-] MonkderVierte@lemmy.ml 4 points 7 hours ago* (last edited 7 hours ago)

Time is no line. It just exists together with space. "Past" is a point of time we saved in memory, "future" what we imagine. Physically, there's only "present".

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[-] DarkCloud@lemmy.world 16 points 12 hours ago* (last edited 12 hours ago)

Can't we just do like, lines on the road that have specific meanings? We could put it all in a book of rules and standards? Make it a nation wide system?

[-] possiblylinux127@lemmy.zip 1 points 7 hours ago

You could put up signs that give directions

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[-] peopleproblems@lemmy.world 4 points 9 hours ago

It's not a hard problem to solve. It's not hard to see the reasoning behind a desire for self driving cars. Anyone who lives outside of a big city in the US knows this.

Roads are already present. Traffic control is already present.

Tie the goddamn roads to the goddamn traffic control and have it coordinate the cars. The cars input their destination, and have radar to stop the car to prevent accidental collision.

The problem is people don't like that they can't get to their destination faster, they don't have the freedom of choosing their exact route, and they can't just rev their engine whenever they want.

It's not mass transit, but it solves the final distance problem.

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this post was submitted on 07 Nov 2024
821 points (98.8% liked)

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