Magiccupcake

joined 1 year ago
[–] [email protected] 6 points 9 months ago (2 children)

Not quite, the true invariant quantity is the magnitude of the spacetime 4 vector, which depends on rest mass.

https://en.m.wikipedia.org/wiki/Four-momentum

[–] [email protected] 11 points 9 months ago (4 children)

It actually goes further than that. In spacetime you're always going the same speed, the more in space, less in time.

At least from the special relativity perspective.

[–] [email protected] 5 points 9 months ago (1 children)

Id like to see this normalized for country size. As is, its really just a country size list, with some slight variations.

[–] [email protected] 37 points 9 months ago (1 children)

It really does read like an ad, which is amusingly ironic since linux mint is free.

[–] [email protected] 40 points 9 months ago (3 children)

They will be safe to eat indefinitely, but may not be palatable, depending on how it's stored.

[–] [email protected] 16 points 9 months ago (3 children)

Sounds like intels optane drives

[–] [email protected] 9 points 10 months ago

I personally disagree, Bard feels very uninspired, and copilot i associate too mich with flying, and also sounds more competent than it is.

ChatGPT is probably not the best name, but at least it's unique.

[–] [email protected] 1 points 10 months ago

The cost to benefit looks way better if you think long term. Especially with climate change on the horizon to compete with planes but emission free.

One of the major problems for upgrading lines is straitening the route, and people fight the emniment domain way harder than they do for roads.

[–] [email protected] 5 points 10 months ago (3 children)

I'm not disagreeing with that, but high speed rail from Boston to Miami would be extremely practical. Efficient, fast, convient travel along that corridor reducing dependence on cars for city to city travel. And the area has both the demand and density to support such projects.

And while its impractical now, if it was built to cheapen regional travel in the region it could grow to high use spurning economic development.

I'd love to take a train at a reasonable pace from near to DC to my family in Pittsburgh, or to visit New York.

I might even enjoy a cross country trek to the rockies for skiing on a train, but it's never going to be an option.

[–] [email protected] 11 points 10 months ago (6 children)

East coast united states has similar population density to most of europe.

It's just out west we have a lot of empty land.

[–] [email protected] 3 points 11 months ago

The average car age is 12.5 years, so many of them are likely approaching 20

[–] [email protected] 4 points 11 months ago* (last edited 11 months ago) (2 children)

Yeah and that's why I'm not advocating for 100 year cars.

I'd be pretty happy with 20 years to, but 10 just feels like planned obsolescence.

I also messed around with the math very loosly, and only accounting for crashes that total a car, they could be expected to go 20 years or more on average.

And that's now with all the terrible driving that happens, especially at night. With slight deacrease in accident frequncy that number can increase a lot.

So maybe 30 is a bit much for now, but I'd still like an ev that would claim to last 20 yeara.

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