ForumsWEPRIs it impossible to arrive at destination?

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loloynage2
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loloynage2
4,206 posts
Peasant

You always need to go half way before going all the way right? But here is the problem, wouldn't you have to always do the half of the half before, meaning that you could never get to your destination.

Example: I would like to move from point A to point B, which is at a distance of 20. Now I first have to go half of the full distance before doing all of it right? So I travel a distance of 10. Well now if have to travel half of my new distance before doing all of it, which would be 5, then 2.5, then 1.25, then 0.625 and so on, but I would never hit 0 (point B).

So theoretically you could never go anywhere but at half of it. Yet we do get to places in real life. Am I wrong somewhere? If not then how do we get to destinations if you always have to do the half of it?

  • 22 Replies
loloynage2
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loloynage2
4,206 posts
Peasant

Actually I just thought about an Idea of how it's possible.
Let's say you want to get to B, which is at 20, you would have to have a point C which is at 40 from you (but in the exact same route/direction as B). So you would in reality aim for C, so you will get to B at half way point. That would make sense. I still want to see what you guys have to say.

dair5
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dair5
3,371 posts
Shepherd

I think what happens is that we think we are only moving half distances. But in reality we are not. We are moving closer and closer to something at a continuous rate instead of a quantum rate and because of that we can reach our destination and then some. Thats how I see it.

EmperorPalpatine
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EmperorPalpatine
9,439 posts
Jester

If not then how do we get to destinations if you always have to do the half of it?

Because people rarely try to travel half distances then half of that distance. Mathematically if you tried to half your way to a place, you'd get very close to it, without hitting it. But no one does that. Like if you need to travel a distance of 1 unit you don't stop halfway at .5, then travel .25 etc. You keep going at your usual rate without cutting it in half.
Consider riding a bike at 10mph to go 1 mile. If you halved your way there, you'd need to slow your bike down to 5mph at .5 miles away, and down to 2.5mph at .25 miles away. People don't do that. You'd keep going at 10mph the whole way (and arrive in roughly 6 minutes instead of never).
Kasic
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Kasic
5,552 posts
Jester

Yeah, you're applying this wrong. If as EmperorPalpatine said, you continued to go half then half of that and so on, your speed would need to half each time as well. Since you continue at a constant speed whilst the remaining distance shrinks, this is obviously not so.

loloynage2
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loloynage2
4,206 posts
Peasant

Yup, it makes sense. But would that apply in quantum science, because it can only jump speeds?

master565
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master565
4,104 posts
Nomad

If you are talking about this in a physical sense, then no, it's not.

Think about it like this, matter can't be broken down infinitely, so once the distance is small enough that you are down to the smallest subatomic particle, you can't go half of that, so you either stop are go the rest of the way.

If you are thinking in a theoretical sense then this is called Zeno's paradox and doesn't really have an answer (which is why it's a paradox)

inferedmonkey
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inferedmonkey
942 posts
Peasant

You always need to go half way before going all the way right? But here is the problem, wouldn't you have to always do the half of the half before, meaning that you could never get to your destination.

Example: I would like to move from point A to point B, which is at a distance of 20. Now I first have to go half of the full distance before doing all of it right? So I travel a distance of 10. Well now if have to travel half of my new distance before doing all of it, which would be 5, then 2.5, then 1.25, then 0.625 and so on, but I would never hit 0 (point B).


... what idiot tries to go half way to there destination? I mean we do have to pass a half way mark but what your saying makes no sense in any way?
Kasic
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Kasic
5,552 posts
Jester

... what idiot tries to go half way to there destination? I mean we do have to pass a half way mark but what your saying makes no sense in any way?


What he was saying is this...

In order to go 100 meters, you must first travel 50, correct? Then in order to go the remaining 50, you must travel 25 first. Then in order to travel the remaining 25, you must go 12.5 more first.
inferedmonkey
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inferedmonkey
942 posts
Peasant

In order to go 100 meters, you must first travel 50, correct? Then in order to go the remaining 50, you must travel 25 first. Then in order to travel the remaining 25, you must go 12.5 more first.


Okay thanks.

I was going to explain what how reality works now but I guess theres no point since it seems a lot of people already have.
nichodemus
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nichodemus
14,991 posts
Grand Duke

Math graphs lesson : Asymptotes, i.e a curve that seems to touch the axis but never does. If you were really pedantic about this; in real life you might never reach Point B but close enough to Point B such that it doesn't matter, much like an asymptote where the final distance is quite negligible.

http://www.freemathhelp.com/images/lessons/graph4.gif

BritHennerz
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BritHennerz
408 posts
Farmer

Why do you have to travel in distances of half of what you left to travel? Why can't you just travel 20 miles at once?
I think you're over complicating life, say if I move 2 meters to the left, do I or do I not get there? This half distance thing makes no sense.

Kasic
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Kasic
5,552 posts
Jester

say if I move 2 meters to the left, do I or do I not get there?


You do. But to go those two meters, you first go 1 meter. And then you have 1 meter left to go, and to go that you first have to travel half of it. That's what he was saying.
thepunisher93
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thepunisher93
1,826 posts
Nomad

This is slicing my brain in halves

HahiHa
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HahiHa
8,256 posts
Regent

You do. But to go those two meters, you first go 1 meter. And then you have 1 meter left to go, and to go that you first have to travel half of it. That's what he was saying.

Yes, but before you can go the first half meter, you have to go the first third of the distance. And the first quarter. And the first fifth, etc. I don't see a point in arguing like that, since after all we're all walking and getting anywhere all the time, right?
BritHennerz
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BritHennerz
408 posts
Farmer

This topic is not a good one for your brain while trying to solve simultaneous equations

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