Alcubierre Drive and Time Travel

[OneFootInTheGrave]

And you have a picture of Einstein as your avatar???

OK. You and are at 2 different locations. Say I assasinate Franz Ferdinand, get a declaration of war and bring it to you. In a universe where I cannot travel faster than the speed of light, it doesn't matter where you are. You will always see that Franz Ferdinand was assassinated and then war was declared. If somehow, I can move faster than light, then you would see the declaration of war 1st, and then Franz Ferdinand being assassinated.

couldn't help it... it was automatic

[KrazyHorse]

Thou shalt not violate causality within my historic light cone. Or else.

[Lorizael]

KH just admitted to being a bot.

[Lorizael]

Several years back, after I'd gotten my degree and dug into the math a little more, I wrote a blogpost that was basically designed to answer the question I had in the OP. Spoiler: pchang had the right answer even though I didn't really get it at the time, KH also did (and the page he linked to has diagrams that are very similar to the ones I made), BK was wrong and useless.

[Aeson]

I like the drive to Albuquerque. Bohol.

Also I feel vindicated about my post in the thread. Funding SpaceX helped get us Trump's second term.

[Lorizael]

NASA is not why there's poverty, despite what you may have heard from Trump's budget request.

[Aeson]

The general apathy towards improving life here on Earth for the poor and working class is. Billionaires racing to colonize Mars is just one of the more obscene examples of it.

[N35t0r]

The general apathy towards improving life here on Earth for the poor and working class is. Billionaires racing to colonize Mars is just one of the more obscene examples of it.

I'd say megayachts, huge mansions, flying around in private jets, and other crap like that are much more obscene than the race for space, just not as showy.

[N35t0r]

Several years back, after I'd gotten my degree and dug into the math a little more, I wrote a blogpost that was basically designed to answer the question I had in the OP. Spoiler: pchang had the right answer even though I didn't really get it at the time, KH also did (and the page he linked to has diagrams that are very similar to the ones I made), BK was wrong and useless.

Did you ever continue with your webcomic? It was funny.

[Aeson]

I'd say megayachts, huge mansions, flying around in private jets, and other crap like that are much more obscene than the race for space, just not as showy.

Of course. Still doesn't mean blasting celebrities into low Earth orbit for a few minutes isn't an obscene waste of resources.

[Lorizael]

Did you ever continue with your webcomic? It was funny.

oh god no

[BeBMan]

What would we use time travel for? Other than finding out lotto numbers, or stopping the development of diet coke early to prevent a Trump presidency?

Historical studies? Going back to the middle ages with modern tech to play god might also be an idea, if we could avoid the occasional witch hunt, and solve possible probs with resupply in case we need to demonstrate our abilities to do miracles repeatedly

[pchang]

Btw, Alcubierre required something with negative mass to make his drive work. Clearly delusional.

[Geronimo]

What would we use time travel for? Other than finding out lotto numbers, or stopping the development of diet coke early to prevent a Trump presidency?

Historical studies? Going back to the middle ages with modern tech to play god might also be an idea, if we could avoid the occasional witch hunt, and solve possible probs with resupply in case we need to demonstrate our abilities to do miracles repeatedly

as a practical matter I suppose the past would be used as a place to extract resources. Especially so if you always go back a little further when it runs out.

[pchang]

Right up until we discover that plundering the past changes the present because those resources are already gone when we looked for them along the original timeline.

[Geronimo]

Btw, Alcubierre required something with negative mass to make his drive work. Clearly delusional.

not the Lentz Soliton version.Also, AFAIK none of them required negative mass, instead the original ones required unreasonable amounts of negative energy. in any event negative energy is required by physics so it's not exotic the way that wormholes or negative mass is.