Theorizing Hovercars and Time Travel

[PigMayor]

I was just talking about this in the ShoutBox, and now I want a full-on discussion/debate, so here we go.
I will be presenting two hypotheses here, and I was hoping we could start a discussion about them.

- Hypothesis 1: Time Travel:
If time travel were possible and someone went to the past, shouldn't that have already been destined in fate and mean that both a) It is impossible to alter history, and b) time travel will be possible eventually? (However, I'm not so sure about time paradoxes, and their logical possibilities.)

- Hypothesis 2: Hovercars:
If hovercars were invented in this day and age, I presume they would be extremely slow, bulky, expensive to manufacture, and require immense amounts of fuel/energy to travel short distances. Ergo, hovercars should be put on hold until more environmentally friendly cars and fuels reach the market before pairing up with hover technology.

 

[blacky84462]

For time travel i reckon it would crete a new timeline and for hover-cars... we just don't need them so they wont be made on a commercial level.

 

[MindzEye]

I'm not gonna argue traveling back in time, (which was recently disproved by a Japanese lab, or at least considered impossible with our current understanding of it.) but traveling forwards is totally considered.

I have a theory that one of the factors of age, one of the golden laws of time itself, is gravity.
Let's think a little more about that: Gravity, one of the forces that make time so apparent. It's not a fixed force on this planet, as some parts pull to the earth harder than others. (Like holes deep in the ocean, or the very tops of mountains.) Those last two are the obvious examples of our planet's gravitational variation, but it changes so subtily no matter where we're standing that it's bound to have hardly any noticable effect on us. Then again, it kinda does.

Like, "Time flies when you're having fun." could have a literal effect when it comes to people traveling, taking in the different airs, sites, and gravity... "Sick days seem to last forever," [Made that one up. They really do tho.] could be a monotany associated with spending time in a fixed place - like a bed - and its general unvariation could get to people.
Lastly, astronauts!
It's been said before; if a set of twins are monitored, one goes to space for awhile while the other stays on planet earth, then the space-bound twin returns to earth, it'll look like the space-twin was younger than the earth-twin. This could be an affect of the (Lack-of) gravity aging the space-twin and allowing him to look young a bit longer. Glass half-empty, the gravity forces the earth-twin to look older.

This of course pulls on the relativity of time: we all experience it differently. Some people are stuck in their regular times, while others feel it moving too fast. That's how they respectively perceive time: Maybe a change of perception could change their feeling of time taking place.
With the astronauts again, they must feel a difference in the passing of time way out there in their rockets and in the I.S.S.
They are traveling at constant speeds around the planet, affected by gravity only by earth's orbit. This massive change in gravitational affection has gotta feel different for those guys up there than to us on land.

 

[blacky84462]

The saying time flies when you are having fun is more about your perception of time than it is about the theory of relativity and traveling forward in time is kinda pointless when you can just be cryogenically frozen.

 

[MindzEye]

The saying time flies when you are having fun is more about your perception of time than it is about the theory of relativity and traveling forward in time is kinda pointless when you can just be cryogenically frozen.

Well there's a point in there, I know. But;

• ...it is not possible without further assumption to compare, in respect of time, an event at A with an event at B. We have so far defined only an "A time" and a "B time."

Assuming <A time> is my perception of time and <B time> is yours. We could be but slivers of seconds apart because we share the same planet, but the differences have got to be greater as the space between us increase.

Yeah we could freeze ourselves to get ahead, but then comes the issue of storage, and storage sanctity, I'm betting rent is also a problem, complications before, during and after, even the method itself...

 

[Moon Rain]

But when is something called time travel? If someone would be frozen for 100 years and his/her body wouldn't get older, would that be considered time travel? Because for he/she it's like sleeping, which probably won't feel like 100 years and he/she wouldn't age, but he/she doesn't really skip those 100 years like you would in a timemachine.

They say that when people can travel through space with the speed of light time travel will be possible

 

[Blue Knight]

I don't think time-travel is possible, tbh.

At least not the general version.

Hovercars, however, would be an awesome idea if implemented well enough, like preset travel routes or something. It would prevent car accidents and such.

Implemented badly, however, we might as well build bigger morgues

 

[MindzEye]

Ah yes. Part deux of this theory post: Flying Cars.
I hear Mag-Lev is making quite a name for itself - using powerful magnets to levitate objects. If I had to guess with what I've seen, read, and know about magnets and mass-transit, hover-cars will start early with magnetic tracks implemented on otherwise regular roads. (I shudder to think of the price-tag there.)

 

[Frisk]

If i were to pick when hoverboards were to come about, and not the little scooter with two wheels, id say we'd probably see one of those in the next 15 years, for when we'll see time travel, its gonna be a long time from now, because theres way too many factors to weigh in. Theres no telling what is gonna come next, but i can garuntee you, when the next hottest thing comes out, im gonna be the first one to get it XD

 

[blacky84462]

Ah yes. Part deux of this theory post: Flying Cars.
I hear Mag-Lev is making quite a name for itself - using powerful magnets to levitate objects. If I had to guess with what I've seen, read, and know about magnets and mass-transit, hover-cars will start early with magnetic tracks implemented on otherwise regular roads. (I shudder to think of the price-tag there.)

We already do have trains that fit such a description.

 

[MindzEye]

We already do have trains that fit such a description.

I meant something more like this implemented on our existing roads and cities: where Magnetic cars will have their start, like the rest of technology in the world. http://scienceblogs.com/startswithabang/2009/10/22/how-levitation-works/

Y'know, have them cities lay out a magnetic array on the road that hovercars can use, and landcars can drive over. - just make sure there's plenty of traction on this new-found metal road, or landcars will be like bumpercars.

I'm also betting the dawn of the flying car will be well after dawn of the automatic driving car, so crashes won't be as likely.

 

[cloudmario666]

I was just talking about this in the ShoutBox, and now I want a full-on discussion/debate, so here we go.
I will be presenting two hypotheses here, and I was hoping we could start a discussion about them.

- Hypothesis 1: Time Travel:
If time travel were possible and someone went to the past, shouldn't that have already been destined in fate and mean that both a) It is impossible to alter history, and b) time travel will be possible eventually? (However, I'm not so sure about time paradoxes, and their logical possibilities.)

- Hypothesis 2: Hovercars:
If hovercars were invented in this day and age, I presume they would be extremely slow, bulky, expensive to manufacture, and require immense amounts of fuel/energy to travel short distances. Ergo, hovercars should be put on hold until more environmentally friendly cars and fuels reach the market before pairing up with hover technology.

this is for time travel: I have a crazy plan i was thinking maybe we can somehow build a "sun engine"for a rocket.Sun rocket is just a bunch of helim and hydrogen to make endless amounts of power(like the sun) to
power a rocket but the problem with this plan is the power will be super duper hot and will probably melt every thing and how do keep the power from getting so big and killing everyone. But say we can get it right then all we need now is go to space and fly super fast. But that make even more problems like will a human survive going faster than light and will the spaceship withhold to speed it must go? But that just theory a theory i made up thank for reading.

 

[MindzEye]

this is for time travel: I have a crazy plan i was thinking maybe we can somehow build a "sun engine"for a rocket.Sun rocket is just a bunch of helim and hydrogen to make endless amounts of power(like the sun) to
power a rocket but the problem with this plan is the power will be super duper hot and will probably melt every thing and how do keep the power from getting so big and killing everyone. But say we can get it right then all we need now is go to space and fly super fast. But that make even more problems like will a human survive going faster than light and will the spaceship withhold to speed it must go? But that just theory a theory i made up thank for reading.

This theory is all over the place. I hope you don't mind if I critically study it.
First off; if creating things was as easy as just having the elements on hand, we'da recreated the human by now. Just because one has the elementary ingredients ready, does not mean one has a great chance of recreating something. There's the risk of a thousand things - gravity and pressure, impurity and reactions to other elements, the mini-star decaying into something simpler and stabler. Assuming we could contain a mini-star, its environment would have to have the appropriate pressure, volume, temp, and other appropriate factors for a star to sustain itself in a box - which I imagine would be ungodly expensive to make with materials not yet discovered.
A star is pretty massive too - and dangerous. controlling one is nigh impossible without gravitational mishaps. We'd have to build it in space and hope to god its gravity doesn't do too much to us during the construction.

As for the traveling at the speed of light thing, thus far humans don't stand much a chance of making anything go at the speed of light. We're still quite a ways off of even reaching sub-light speed, which is our next best bet of touching light speed, but at the same time not touching light speed too.

 

[cloudmario666]

This theory is all over the place. I hope you don't mind if I critically study it.
First off; if creating things was as easy as just having the elements on hand, we'da recreated the human by now. Just because one has the elementary ingredients ready, does not mean one has a great chance of recreating something. There's the risk of a thousand things - gravity and pressure, impurity and reactions to other elements, the mini-star decaying into something simpler and stabler. Assuming we could contain a mini-star, its environment would have to have the appropriate pressure, volume, temp, and other appropriate factors for a star to sustain itself in a box - which I imagine would be ungodly expensive to make with materials not yet discovered.
A star is pretty massive too - and dangerous. controlling one is nigh impossible without gravitational mishaps. We'd have to build it in space and hope to god its gravity doesn't do too much to us during the construction.

As for the traveling at the speed of light thing, thus far humans don't stand much a chance of making anything go at the speed of light. We're still quite a ways off of even reaching sub-light speed, which is our next best bet of touching light speed, but at the same time not touching light speed too.

good stuff dude. my little "theory" was super weird or crazy but you know just thinking out loud.

 

[MindzEye]

good stuff dude. my little "theory" was super weird or crazy but you know just thinking out loud.

It's how the best ideas come about.