Bike Forums

Bike Forums (https://www.bikeforums.net/forum.php)
-   Road Cycling (https://www.bikeforums.net/forumdisplay.php?f=41)
-   -   Addiction LXXVIII (https://www.bikeforums.net/showthread.php?t=1197210)

MoAlpha 04-07-20 04:05 PM


Originally Posted by Bah Humbug (Post 21405932)
I said I would come back to this, and now I will.

I think it's likely that meaningful interstellar travel is impossible. For this purpose, "meaningful" means "I can just get in my rocket/ saucer/ ship/ whatever and fly to Alpha Centauri or an even more distant star". Frankly, I don't think meaningful interplanetary travel is possible - we can accomplish briefly putting couple of people on the Moon with the might of a superpower, and that's incredibly close by astronomical standards. We can't even get soil back from Mars (though it might be possible); getting humans there and back is right out. Getting a person to a Jovian moon? No. People make the mistake of thinking "well with progress we could get there, technology is great". No. The moon is ~380,000km away. Mars is a minimum of ~55,000,000km away. Jupiter is ~588,000,000km away. The energy cost of that is beyond anything we can comprehend, and that's just to zip around our own solar system. Alpha Centauri? That's a cool 41,000,000,000,000km away. As long as the laws of thermodynamics hold, the ability to get there is zero. At all. And being a laws of physics thing, that holds true for life that evolves on any other planet in any other solar system in this galaxy or universe. The ability to travel across space isn't just like advancing from a Model T to a Bugatti, or even like advancing from a chariot to a Concorde. It's tempting, because we're really bad at understanding just how large space is, but we'll never just be able to travel even between planets like we do continents. The best we could possibly hope for is a tiny group of colonists with knowledge and rudimentary tools and someone find a perfect slingshot route to get them to Alpha Centauri and just hope there's a Goldilocks planet there that can actually be lived in, and that they manage to survive and not die of disease, or poison, or just finding that there's not actually life there to eat. And we'd never know if they succeeded or not. It's probably also not actually possible, but maybe that sort of perfect slingshot course exists.

Not saying you're wrong, but what's the energy cost beyond escaping gravity and having enough juice to power life support systems and your iPad once you're beyond useful sunlight?

rjones28 04-07-20 04:31 PM


Originally Posted by mwat (Post 21405830)
Time to try and make an indoor roller.

Keep us posted.

Bah Humbug 04-07-20 04:36 PM


Originally Posted by MoAlpha (Post 21405988)
Not saying you're wrong, but what's the energy cost beyond escaping gravity and having enough juice to power life support systems and your iPad once you're beyond useful sunlight?

Maybe I should have made it explicit, but that's part of what I meant in "meaningful". Sure, once you slip the surly bonds of gravity you can just coast to your destination if everything's calculated correctly (and of course you need to carry enough fuel to decelerate upon arrival), but when I wrote of "just get in your rocket and go" I didn't mean "and your grandchildren will arrive". Hong Kong is on the other side of the world and I can fly out there in a day, turn around, and come back. That's incomprehensible for just a century ago, and is the sort of progress that's nothing compared to what we need to even take a trip to Mars and return. The best-case scenario with unlimited free energy is constant 1G acceleration to the halfway point, then turning around and using the engine to brake, and... well even that's years to get to and from Alpha Centauri, and it's the sort of energy cost where we might as well just be playing make-believe anyway.

An analogy I sometimes use is, imagine if the only landmasses on the world are Cuba and Taiwan, and humans evolve on Cuba. Even if they invent boats, the chances of them being able to build a large enough ship to get to Taiwan, and get back, are basically zero. And that's on a scale that is much, much smaller than going interplanetary. It's much smaller again than interstellar, by factors we're really bad at internalizing. And it rains on the ocean, and there are fish, and there's wind. Space is basically empty. Outside of magical functionally-unlimited free energy (amounts of which would make that trip to HK take a few minutes and too cheap to charge for, and building or removing mountain ranges easy) we're stuck here. Unfortunately.

This also basically puts the kibosh on aliens, which doesn't stop my nightmares.

ls01 04-07-20 04:37 PM


Originally Posted by indyfabz (Post 21405792)
NJ has closed all state and county parks.

Kitty should be released around noon tomorrow assuming all continues to go well.

👍for the cat

rjones28 04-07-20 04:38 PM


Originally Posted by seedsbelize (Post 21405764)
Suddenly classical music curious. So far, today, I've tried baroque, beethoven, stravinsky, and am currently listening to mozart. Frankly, I'm having trouble with all of it. Recommendations? Or is it just time that's required? Been R&B all my adult life.

Just stream this - Radio | WCNY - between 10am and 2pm EDT Monday thru Friday. ;)

robertorolfo 04-07-20 04:39 PM


Originally Posted by Bah Humbug (Post 21405932)
I said I would come back to this, and now I will.

I think it's likely that meaningful interstellar travel is impossible. For this purpose, "meaningful" means "I can just get in my rocket/ saucer/ ship/ whatever and fly to Alpha Centauri or an even more distant star". Frankly, I don't think meaningful interplanetary travel is possible - we can accomplish briefly putting couple of people on the Moon with the might of a superpower, and that's incredibly close by astronomical standards. We can't even get soil back from Mars (though it might be possible); getting humans there and back is right out. Getting a person to a Jovian moon? No. People make the mistake of thinking "well with progress we could get there, technology is great". No...

300 years ago (or insert any period of time that takes you back beyond the 20th century) the idea of human flight would have seemed unfathomable (yeah, da Vinci, I know). 30 years ago, the idea of a smart phone would have seemed unfathomable to most (see TNG). Look at what the ITER project could mean to us. Putting a cap on future progress seems strange given human history.

MoAlpha 04-07-20 04:43 PM


Originally Posted by Bah Humbug (Post 21406031)
Maybe I should have made it explicit, but that's part of what I meant in "meaningful". Sure, once you slip the surly bonds of gravity you can just coast to your destination if everything's calculated correctly (and of course you need to carry enough fuel to decelerate upon arrival), but when I wrote of "just get in your rocket and go" I didn't mean "and your grandchildren will arrive". Hong Kong is on the other side of the world and I can fly out there in a day, turn around, and come back. That's incomprehensible for just a century ago, and is the sort of progress that's nothing compared to what we need to even take a trip to Mars and return. The best-case scenario with unlimited free energy is constant 1G acceleration to the halfway point, then turning around and using the engine to brake, and... well even that's years to get to and from Alpha Centauri, and it's the sort of energy cost where we might as well just be playing make-believe anyway.

An analogy I sometimes use is, imagine if the only landmasses on the world are Cuba and Taiwan, and humans evolve on Cuba. Even if they invent boats, the chances of them being able to build a large enough ship to get to Taiwan, and get back, are basically zero. And that's on a scale that is much, much smaller than going interplanetary. It's much smaller again than interstellar, by factors we're really bad at internalizing. And it rains on the ocean, and there are fish, and there's wind. Space is basically empty. Outside of magical functionally-unlimited free energy (amounts of which would make that trip to HK take a few minutes and too cheap to charge for, and building or removing mountain ranges easy) we're stuck here. Unfortunately.

This also basically puts the kibosh on aliens, which doesn't stop my nightmares.

They'll invent a lightweight energy source for propulsion and systems power lasting millennia right after they cure SARS-CoV-2.

Bah Humbug 04-07-20 04:45 PM


Originally Posted by robertorolfo (Post 21406040)
300 years ago (or insert any period of time that takes you back beyond the 20th century) the idea of human flight would have seemed unfathomable (yeah, da Vinci, I know). 30 years ago, the idea of a smart phone would have seemed unfathomable to most (see TNG). Look at what the ITER project could mean to us. Putting a cap on future progress seems strange given human history.

I literally brought up that the jump from a chariot to the Concorde is nothing next the energy costs we're talking about. It's not enough. It's not even the right order of magnitude jump. But I know, math is hard.

robertorolfo 04-07-20 04:59 PM


Originally Posted by Bah Humbug (Post 21406048)
I literally brought up that the jump from a chariot to the Concorde is nothing next the energy costs we're talking about. It's not enough. It's not even the right order of magnitude jump. But I know, math is hard.

Unfortunately for you, it's not a question of math. Rather, it's a matter of critical thinking. The point is that what was once inconceivable is now commonplace. Orders of magnitude have nothing to do with it. It's more a question of the human mind. Multiplying zero by some other number gets you nowhere, so talking about orders of magnitude when discussing concepts that don't yet exist is pointless, no?

Bah Humbug 04-07-20 05:00 PM


Originally Posted by MoAlpha (Post 21406045)
They'll invent a lightweight energy source for propulsion and systems power lasting millennia right after they cure SARS-CoV-2.

Ha. But SARS-CoV-2 might in theory be cured (maybe... they haven't gotten the common cold though). Unlimited free power won't be.

Jadesfire 04-07-20 05:06 PM


Originally Posted by seedsbelize (Post 21405764)
Suddenly classical music curious. So far, today, I've tried baroque, beethoven, stravinsky, and am currently listening to mozart. Frankly, I'm having trouble with all of it. Recommendations? Or is it just time that's required? Been R&B all my adult life.

Hell, I'll throw out a few suggestions, bearing in mind that my music taste is quite varied. My enjoyment of classical music varies: if I'm studying something and I really need to focus, I like Tchaikovsky (for example, I will just play this in the background:
) or Pachebel.
But when work gets annoying and/or I need some motivation, these guys are pretty cool (skip to 19:55 or 24:29 for really good examples of their work):
. Might be a bit too modern-ish, though.


Heathpack 04-07-20 05:23 PM


Originally Posted by ls01 (Post 21405959)
yes

whoa

kissTheApex 04-07-20 05:24 PM


Originally Posted by bampilot06 (Post 21405230)
So this would be a normal thing to do then. It was listed in the description for excel, but not at CC. Trying to decide between the two.

Abshipp really close to buying the Cervelo C2, whyfii has been answering all of my annoying questions.

Thatís what enablers do :thumb:


Originally Posted by Bah Humbug (Post 21405386)
In my neighborhood I run past a house that has a CTS-V coupe with a "Please be patient - student driver" sticker.

Nice. Itís my dream to rent a <insert your choice of exotic car here> and stick one of them magnetized new driver stickers on it while on lease. Of course thereís always more cycling stuff to buy for the same amount of money. :D

berner 04-07-20 05:37 PM


Originally Posted by seedsbelize (Post 21405764)
Suddenly classical music curious. So far, today, I've tried baroque, beethoven, stravinsky, and am currently listening to mozart. Frankly, I'm having trouble with all of it. Recommendations? Or is it just time that's required? Been R&B all my adult life.

I have several suggestions. I'm a classical fan and have been running into videos of young music prodigies which has me entranced. The first video is of two girls, both who play both piano and violin at a high level. One girl, Alma Deutcher is hailed as a new Mozart. She plays and composes her own music and has performed all over the world.
The second video is of a very young girl, Clara Gibisova. Even at her young age she displays high concentration and intensity and an inherent understanding of what the music is doing.
I don't like everything classical. Most music is a product of not only the composers mind but of time and place. Some world class musicians in preparing a new piece for performance will read a biography of the composer and become familiar with the times and even the instruments of the period. This takes a bit of work and time.

datlas 04-07-20 05:43 PM

I have to make matzoh ball soup tomorrow, and Charoset. I usually make Charoset with apples, walnuts, raisins, and cinnamon. We have no raisins so I am going to substitute dates. I hope that’s kosher.

big john 04-07-20 05:51 PM

I want to ride tomorrow. All the trails are closed, including the 7 mile climb behind my house. I've been staying on the road but cars are driving faster and more carelessly lately. Saturday I had a nice road ride with very little traffic so I could try that route again. And it's raining, so there's that.

big john 04-07-20 05:55 PM


Originally Posted by datlas (Post 21406137)
I have to make matzoh ball soup tomorrow, and Charoset. I usually make Charoset with apples, walnuts, raisins, and cinnamon. We have no raisins so I am going to substitute dates. I hope thatís kosher.

Any reason why dates wouldn't be Kosher? What do you do with the Charoset, do you spread it like jam?

Bah Humbug 04-07-20 05:59 PM


Originally Posted by robertorolfo (Post 21406078)
Unfortunately for you, it's not a question of math. Rather, it's a matter of critical thinking. The point is that what was once inconceivable is now commonplace. Orders of magnitude have nothing to do with it. It's more a question of the human mind. Multiplying zero by some other number gets you nowhere, so talking about orders of magnitude when discussing concepts that don't yet exist is pointless, no?

Math is critical thinking; what you're proposing is "clap your hands if you believe".

However, this thread is where I come to have pleasant chats with my friends, so you're going on the quiet list because this is not a venue for you to try to salve your ego.

datlas 04-07-20 05:59 PM


Originally Posted by big john (Post 21406157)
Any reason why dates wouldn't be Kosher? What do you do with the Charoset, do you spread it like jam?

You typically have some on matzoh. Itís a ritual food for Passover. It actually tastes really good imo.

Pirkaus 04-07-20 06:02 PM


Originally Posted by seedsbelize (Post 21405458)
Boca Burgers for the win

Fieldroast hand formed burgers 😋 Not "meaty" but delicious.


Originally Posted by BillyD (Post 21405722)
Iíll sick with the real meat, thankyouverymuch. Moderate portions, of course.

E.coli, trichomoniasis, listeria, yummy :D

Bah Humbug 04-07-20 06:06 PM


Originally Posted by Pirkaus (Post 21406166)
E.coli, trichomoniasis, listeria, yummy :D

I seem to recall one or two cases of food poisoning from vegetables. ;)

Pirkaus 04-07-20 06:08 PM


Originally Posted by Bah Humbug (Post 21406174)
I seem to recall one or two cases of food poisoning from vegetables. ;)

Just taking advantage of his faux pas. :rolleyes:

datlas 04-07-20 06:17 PM


Originally Posted by mwat (Post 21405830)
Time to try and make an indoor roller.

I saw a YouTube video using 3 rolling pins once.

LesterOfPuppets 04-07-20 06:19 PM


Originally Posted by seedsbelize (Post 21405764)
Suddenly classical music curious. So far, today, I've tried baroque, beethoven, stravinsky, and am currently listening to mozart. Frankly, I'm having trouble with all of it. Recommendations? Or is it just time that's required? Been R&B all my adult life.

I think what's missing is the theramin.


Velo Vol 04-07-20 06:22 PM

Walks. Should. Count. On. Strava.

Velo Vol 04-07-20 06:24 PM


Originally Posted by Bah Humbug (Post 21406031)
An analogy I sometimes use is, imagine if the only landmasses on the world are Cuba and Taiwan, and humans evolve on Cuba. Even if they invent boats, the chances of them being able to build a large enough ship to get to Taiwan, and get back, are basically zero.

wut

People can go by boat from Cuba to Taiwan.

kissTheApex 04-07-20 06:25 PM


Originally Posted by datlas (Post 21406137)
I have to make matzoh ball soup tomorrow, and Charoset. I usually make Charoset with apples, walnuts, raisins, and cinnamon. We have no raisins so I am going to substitute dates. I hope thatís kosher.

I see what you did there.

Chag Sameach!

big john 04-07-20 06:25 PM


Originally Posted by datlas (Post 21406160)
You typically have some on matzoh. Itís a ritual food for Passover. It actually tastes really good imo.

My sister's late husband had us over for a sader a few times. He explained a lot of it to me and it seemed like a great tradition. He was a great guy and I always looked forward to any event at their place.

Bah Humbug 04-07-20 06:26 PM


Originally Posted by LesterOfPuppets (Post 21406196)
I think what's missing is the theramin.

Synchronicities are funny - I had barely remembered the theramin existed until watching American Horror Story season 3 a week or two ago, and now it pops up again

Velo Vol 04-07-20 06:27 PM


Originally Posted by robertorolfo (Post 21406040)
300 years ago (or insert any period of time that takes you back beyond the 20th century) the idea of human flight would have seemed unfathomable (yeah, da Vinci, I know).

Kind of ruins your point.


All times are GMT -6. The time now is 12:26 AM.


Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.