What a terrifying thought! I imagine there’s some other sapient race out there that has experienced that.
Now think about the kinds of predators that evolved in constant night, which those people found while exploring the darkness. Then they develop telescopes and discover other worlds on which the night moves…
Unless the animals have developed a way to move for miles every day, there should be predators who are adjusted for the night side, and predators who are adjusted for the day side that would be well known and defended against from the prey on their side. For a sentient species, figuring out how to defend against one or the other shouldn’t be too hard.
What would be harder to defend against would be those predators who live in the twilight areas are close to both day & night.
Kinda. I imagine the GP meant predators that live on the border of night specializing in devouring anything that makes a wrong errand and ends-up there. Like the ones we have at the bottom of the ocean.
On a second thought, I don’t think they would be very scary. Probably mostly scavengers.
Probably, yeah. Definitely can’t be good for them. I’m not a biologist, but I encourage anyone reading this to chime in! What happens to cave-dwelling creatures when brought out into the sun for an extended period?
I didn’t make it clear in my original comment, but in my head I imagined a race whose explorers swore off venturing into the darkness after the first few disappearances. Maybe some folklore emerged, and they assumed that “that place” and death are intrinsically related. Then, as their tech became more advanced, they gained the ability to scrutinize the other planets in their star system. Imagine the horror when they see “death” wandering along the surface (rather, the surface moving through it) and they have no clue why theirs isn’t moving.
Is it merely asleep?
This was a fun thought experiment. Thanks for getting my brain churning! I’d love to read someone’s expansion on this idea, if anyone else finds it fascinating. At this point in the lore, I can see religions being born to try and appease Death, or at least prolong its slumber in the frozen hemisphere while they search for answers. Wars are fought, nations fall, yada yada… Maybe it’s best not to draw too many parallels with our own world 😁
Hitchhikers guide to the galaxy has an alien species that evolved on a planet (Krikkit)with constant thick dust clouds.
Upon first witnessing the glory and splendor of the Universe, they casually, whimsically, decided to destroy it, remarking, “It’ll have to go.” (…) the Krikkiters built an incredible battlefleet and waged a massive war against the entire Universe. The Galaxy, then in an era of relative peace, was unprepared, and spent the next 2,000 years fighting the Krikkiters in a war that resulted in about two “grillion” casualties
Isaac Asimov also mused about ribbon worlds. ie tidally locked planets with a habitable zone in the twilight regions.
I seem to recall also reading a story about a species on a ribbon world but because of precession had a 10,000 year (or so) day. They had a constant slow migration and eventually started finding the ancient forgotten ruins of their own society.
I’m glad Asimov also thought of The Long Street or Eternal Dusk I wondered how wide the strip of settleable territory might be, say on a earth-sized tide-locked planet.
The moon is tide-locked to the earth, but wobbles back and forth, so a tide locked world might also have a day / season cycle where the fringes get extra hot / cold.
I have read a short story about a world with like 9 suns and 3 moons. It’s day all the time, except once every 2000 years, when there is a total solar eclipse. So every 2000 years society falls into chaos, most of the population kills themselves and only rich people, who can afford enough candles/fire or people who are passed out drunk survive the eclipse. At the time the story takes place one astronomer/scientist notices the pattern in their history and like predicts it or something.
Sadly I do not know the link. If anyone recognizes the story I would love to read it again.
Many of the passengers would suffer extreme injuries from the changes of velocity (up to 230 mph based on a loop radius of 3 x ship length) and rotation (unlike rollercoasters, or even airplanes during simple take-off and landing, passengers aren't normally strapped down).
Hybrids are more affordable than full electrics, and have some of the benefits.... I have a Kia Sorento and its torque was enough to climb out of a pretty deep rut that would have required shifting into low4 on my dad's 4x4... Plus it gets about 600 miles on a tank.
the price gap is slowly closing, esp if you take into account total cost of ownership. It agree that the upfront cost makes it out of reach for many people.
Really the biggest part of the price gap now seems to be volume. Not enough new cars to offset the R&D and bring prices down. Not enough new cars for there to be a healthy used car market. And especially not enough non-premium cars
An ICE hybrid is a gas car with a little electric motor shoehorned inside.
A "plug in" hybrid as they are called is a full electric drivetrain, with a gas generator like you'd buy at Lowes stuck in the boot
.
It seems trivial, but the difference is massive. The former is super complicated, heavy, and expensive, as you need all the junk a gas car needs and the electric stuff to go with it.
The later is hilarously efficient. It takes the best part of electric cars, the dead simple drive train, and solves their achilles heel: the massive battery. You can get away with a dirt cheap 3 horsepower generator in such a setup and shrink the battery massively, whereas a ICE hybrid needs a huge car engine and (like I said) all the expensive junk that goes with it.
You don't see more of the later because:
Car manufacturers are geared to produce ICE cars, and reserve the electric drivetrain capacitry for profitable luxury vehicles first.
This is just speculation on my part, but a gas range extending generator "taints" a full electric car, making it unpalatable to people who think it ruins the image, eco friendliness or whatever, when it's actually better for the environment because the battery isn't so freaking big.
Another point I was getting as is that pure electric cars suffer from the same problem space rockets do: most of their weight is fuel.
Hence they are heavy, need a lot of raw material and manufacturing. Read: Expensive and bad for the environment, compared to a cheaper plug in hybrid.
And a tiny, 5 horsepower gasoline generator is hilarously efficient compared to a car engine. And dirt cheap, and weighs virtually nothing. There are technical reasons for this, but basically it's not even in the same league, and produces a fraction of the emissions as a full ICE car.
Maybe truth is they started talking about doing a car like that and by the time it was ready for production they ended up with a regular ICE car because they nearly doubled the HP of the generator every time the design got reviewed like you are doing now. Before long it will be a tiny 98 HP generator…
You really don't need 90hp. Coasting on the freeway takes less than 10hp, depending on how big of a block you drive, so as long as the average is around that, the generator can keep the battery charged forever, and the battery handles any surge in power you need. It's only a problem if you drive like a jerk, and floor it out of every light or speed down the highway at 100+mph, and do it long enough to drain the battery.
But the brilliant part is that you can design the generator motor for single, constant RPM. I can't emphasize how much easier and more efficient that makes everything, vs. having to engineer a huge power/rpm range that can handle a dynamic load.
No I’m with you and have always kind of wished that’s the direction more EVs would have gone. I have a minivan for all the shit going on with kids and I love it but I have to drive six hundred miles half a dozen times a year so they can visit their mom. I higher range EV that I can refill with gas would be a game changer. Instead I got an electric golf cart that is street legal I use for the majority of my local commuting so I only drive the minivan a few times a week. I was really just being a turd because your first comment said 3 HP and the next one said 5 HP.
too many people never plugged them in, so you just have a slightly heavier ICE car
they would have been a great transition to full EV, but full EVs are now functional enough for most people (we need to get the volume up to get the price down)
I suppose they’re still right for some people but generally it’s just Toyota looking back to do what they should have been doing ten years ago
This idea overlaps the big truck mentality: most EVs are much lighter. The weight penalty averages only about 20% over an equivalent ICE, so the type of vehicle you get can be a much bigger impact. My EV is a mid sized SUV that may be the biggest car I’ve ever owned and it weighs 4,000 lbs. I’m not claiming it’s light, but it’s much better than you seem to think
Still, there is a weight penalty depending on how much range they try to squeeze in.
And I'm one of those people that gets super salty about ICE cars getting so heavy too, especially crossovers and city SUVs that everyone seems to run now. A small or mid sized SUV should not be 4,000lb with modern tech, ICE or not.
Purchase price, higher maintenance costs (EVs eat tires due to the increased weight and higher torque), installation of charging infrastructure (some us need expense electrical service upgrades and added wiring; we don’t all have 200 amp panels and garages with 30 amp 240v service already wired in)
I’d love an EV, but I won’t be afforded Int one for a bit. And used ones, even if cheaper, will have massive battery degradation cutting range way down.
I always heard the concern about electrical service but wonder at the reality. A level 2 charger is the same as a stove circuit: do none of you have electric stoves? You don’t even need that: some people are fine with just an extension cord, some people need a “dryer outlet”, I have never come close to needing the level 2 charger: is it really important that my EV charges in a couple hours vs by morning?
Also, hasn’t 200a service been standard for new homes for a couple decades? If someone can afford an EV, they are much more likely to have a newer home so already have 200a service
I know level 1 charging is there (although I also only have one exterior outlet), ~3 miles per hour of charging is tight. I need to be plugged in at least 10 hours for just my commute.
And, yeah, you hit on the big problem. EVs are expensive and are only really accessible to those already at the upper end of the spectrum. Belief that gas engines are more powerful or have more instant torque is not what is keeping people from EVs, so the point Randall makes is pretty stupid.
But I had a lucky start in a previous owner upgrading to 200a service …. Maybe to install central air? When I moved in, I got all gas appliances, but 20 years later, everything is coming up for replacement. Times have changed. Technology is changing. Our understanding of our impact on the environment is changing.
The timing is perfect.
I replaced my old gas stove with induction, and a big rebate
i have teens just starting to drive so I let them use my old Subaru and bought myself an EV, and a huge rebate
I installed a level 2 charger, with a rebate
My furnace and AC are past their life expectancy and there are huge rebates on heat pumps ….
According to this article, the factoradical system gets efficient for numbers larger than 20!, but i guess this here is a shining example of less is more is less
This applies when you're a pedestrian waiting to cross too. There are always those drivers who think they're doing you a favor by stopping one of the lanes of traffic so you can walk out into the other. They smile and wave and look baffled when you don't take the bait.
yesterday a guy tried to wave me to cross then started angrily raising his hands like "FUCKING GO!" completely oblivious to the car that flew past his left side in the opposite direction
Had guy asking me to turn like that and when I refused he gave me the finger as he finally drove on. How come they hold up traffic and then get mad at you for not driving into on coming traffic?
You're right of course, but in a broader sense there is literally no action that anyone takes that is altruistic. We only do things that benefit us or, rarely, our group as a whole.
Oh god, this reminds me of a cringe mistake just after I was getting my license. I was driving up to a crosswalk and there was a kid standing next to, maybe 8 or 9, holding their hand out. You know, just like they learn at school that they should do that to make it clear they want to cross even tho the car is supposed to stop anyway. I saw this and what did I do? I thought the kid waved at me and my new license, so I just drove past and waved back. What the fuck, brain?
Generally pedestrians have the right of way at crossings (unless it's controlled with a light) in my state and neighboring states, most crosswalks even have signs that inform you to yield to pedestrians.
Feels like at least part of the issue is multi-lane pedestrian crossings. Most of the time that should either be single-lane, a traffic light or a tunnel/bridge.
If you trust every driver to follow the rules exactly and have their eyes open, you can risk your life by walking out. Otherwise you might wait anyway. And the rules about right of way depend on your country and state.
I'm not saying you should be reckless, but too often I see people be either uninformed or unwilling to exercise their rights. To be fair, I do write with something of an urban bias, where thankfully those kinds of speeds are much less common.
I cannot complain about this. I grew up in a small settlement and while my parents encouraged my scientific temperament, we were too poor to travel anywhere just to see an eclipse. One of the best celestial show comes around and my town is right in the middle of 22km wide line of totality and we got 45 glorious seconds of darkness. Those 45 seconds cemented my love for space.
He’s definitely talented and intelligent but as always people vastly underestimate skill. Humour is a skill that you can learn and he’s been doing this comic for ages now. When you’ve been doing something almost every other day nonstop for years, your brain allocates a ton of cycles to that skill. You start applying that skill all the time, sort of like the Tetris Effect. I bet he gets multiple comic ideas daily reading all sorts of research and memes.
As a fan of log-scale axes, Randall really ought to at least suspect that the vertical axis is also logarithmic. If so, the average 800m sphere is very much not tasty.
xkcd
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