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Portals aren't real. You are arguing about nothing.

B

Portals die when the surface they're placed move, so this violates the game's rules. If the other surface was moving instead, the correct option would be B.

B

So this portal physics riddle is frequently posted on Sup Forums, and it can never be agreed upon which one is correct. In order to prevent further uncivilized arguments, I have decided to shed some light on the issue.
The pattern that seems to emerge is that advocates of A quote Newtonian laws, while those in support of B leverage Einstein's theories.
The real question is: Which of these two individuals do you trust the most?

A
the cube has no momentum and the portal is just a hole.

>(((Einstein)))
A.

>(((stein)))
A

i dont trust any of them cause they ded

strawpoll.me/13504644
strawpoll.me/13504644
strawpoll.me/13504644

strawpoll.me/13504425

It's B. Afags only argument is Sup Forums tier "relativity is a jewish conspiracy" shit.

Oh boy, the Sup Forumsfaggots come to ruin another thread.

If you stand outside the blue portal and look down on the cube, then see it effectively accelerate at you at unbelievable speeds, why would it stop on a dime the instant it comes through?
In the perspective of the blue portal, the cube is coming through it at a high velocity, regardless of how it achieved that. It could just as well be pushed by its platform into the orange portal at equal speed and the result on the other side would look pretty much the same from the blue portal's side.
Believing that regular momentum applies the same way with literal fucking portals, is quite irrational.

Sup Forums has ruined this place

Oh boy, another 500-post thread in which A-fags claim:

1) That the concept of relativity of motion is wrong.
2) That the concept of relativity of motion is the same as special relativity.
3) That there is only one valid frame of reference.
4) That portals conserve momentum because momentum is not a vector.
5) That portals conserve energy because potential energy does not exist.

I can't wait.

tpbp

>Hating on jews is a new thing
Also Einstein was a fucking hack.

Portals don't exist because of contradictions between these two. Both are correct depending on frame of reference, but are mutually exclusive.

>A
Imagine you are the cube with the orange portal halfway through you. Your top end feels no force (other than gravity) and your bottom end feels no force.
This is true for all positions of the orange portal vertically along the cube, so no acceleration takes place.

>B

Imagine you are standing in front of the blue portal looking in. You see a cube speeding towards you, with no force slowing it down. As it passes through the portal it maintains this speed and flies out.

It's nice that most people now understand that the question doesn't have an answer because it relies on something self-contradictory, but it's also nice to see the different arguments for each one so you can empathise with the other retards in the thread.

It's obviously A. There's nothing to propel the cube forward and it doesn't have any kinetic energy of its own.

this. Thread is over. Go home boys

>Also Einstein was a fucking hack.
You know you have to elaborate when you make these kind of claims, don't you?

So then a third option C, should exist.
The orange portal disappears, the cube is wedged or smashed between the two platforms and the blue portal becomes inactive.

>Newton
Self-hating autistic alchemist literal homo faggot that steals work from other people and uses his gang of gay fuckbuddies to support him in legal battles about it
>Einstein
>(((stein)))

what you described is regular momentum though
its just that people cant comprehend, or didn't think about it
you can't think 3 dimensionaly
scenario depicted makes it as if there are two separate universes moving relative to each other, while at the same time it is one universe
you just can't look at it from a simple point of view

>what is portal 2

B

What the fuck sense does A make?
Any matter entering the first portal will exit at the same velocity it entered through the second portal.

For what it's worth, this guy who worked on Portal thinks it's B.

>inb4 "b-b-but he also says there's no real answer"

That doesn't mean it's A.

It's a meme ya dip!

Drop a doorframe on top of a cube. Would it jump up? No, it will simply end up on the other side of that doorframe.

Please tell me this isn't actually a thing. Do you know how distraught I was when I discovered that Flat-Earthers were actually serious? Please don't do that to me again.

>Your top end feels no force
uh, but thats wrong
the part of you through the portal would feel force

a portal is just a hole. if you threw a hula hoop over the cube it would not suddenly fly across the room.

there are no moving portals in portal 2

drop yourself out of a window

both entrance and exit is moving at the same speed in the same direction in your description

Removing the most important aspect of the problem does not produce an equivalent problem.

Find me a door frame whose front side is moving with respect to its back side.

It would be more like dropping a doorframe + an entire world in motion onto the cube. The environment past the doorframe is moving relative to the cube

You haven't been on Sup Forums long enough.

I meant that it's irrational to see the cube's "internal" momentum as a deciding factor, when everything in the equation literally depends on how things were and become from the perspective of the blue portal.

>Flat-Earthers were actually serious
w-what?

Daily reminder that (((Einstein))) stole all of his work from Poincare, Hasenhorl, Lorentz, and Planck.

votes show landslide B victory
there is yet hope for this place

it's just a hole you can place anywhere that is what the game describes portals as just a fucking hole. it does not add, subtract give or take apply or unappy ANYTHING it's just a fucking hole. you don't FEEL ANYTHING BECAUSE IT JUST A FUCKING HOLE GOD DAMNIT.

it's A any one who says it's B is a fucking dumb ass try hard LOOK AT ME I DID ONE YEAR OF COLLEGE PHYS. THE GAME DESCRIBES THEM AS JUST FUCKING HOLES

There are, but they only move parallel to the portal's orientation. Its where you destroy a machine that filters gas or something. You use moving portals to laser open tubes.

I don't know about the Jewish conspiracy, but the previous thread (which you can find in the archive) is full of A-fags claiming outright that motion is not relative and that there is only one real frame of reference. They also kept insisting that the idea of motion being relative was something invented by Einstein (presumably because they thought it was the same as special relativity).

No, if I jump out it implies that I have some speed going in. This cube is entirely stationary, where does it get the velocity? Its initial and final position don't change relatively to itself.

Former A-fag here. I suppose this settles the whole debate as well as you can possibly expect. I mean, I still have my doubts, but I wouldn't debate one of the people behind the game itself on the matter, they know the physics of the game better than any of us.

>don't FEEL ANYTHING BECAUSE IT JUST A FUCKING HOLE GOD DAMNIT
thats a really mean way to describe your mom
also youre wrong

Newfaggots from Reddit who can't take a joke have ruined this place
Kill yourselves

Portal on the Moon

>where does it get the velocity
from the exit moving relative to the entrance

>No, if I jump out it implies that I have some speed going in
thats alright, let me drop a window on you, that has all of the universe attached to the other side, you will stay stationary but don't worry, that wont stop the pavement moving towards you with terminal velocity.

1) How does the cube come out of the stationary blue portal without having any velocity with respect to that portal?
2) Why wouldn't the portal be able to give the object any speed? It has been demonstrated numerous times that portals conserve neither energy nor momentum.

[stein]

It's obviously A you scizos

that'd be cool if it was a funny meme

shit's so forced

1. in order for two things to pass each other, they must be moving relative to each other.
2. for there to be relative movement, at least one of the things has to move
3. the cube passes the portal.
4. the portal is standing still.

Ergo, the cube moves.

Wasn't refuted last thread.

Actually, it's the A-fags that undermine the reality-bending aspects of portals and treat them as just holes.

so you just believe the guy and throw your own opinion and logic out of the window?

What's Einstein got to do with B?

Learn to relativity, faggot.

cause they cant
so no one is replying to you
meaning you didnt win

It would just fall because there is no force being applied to the box. How is this a debate at all? Why did you put the personality types of Einstein and Newton next to the results?
Like, seriously, what's the matter with you?

I say the cube exists in both frames of reference simultaneously and that's why it's B. A privileges one frame of reference over the other, that is, the one in which the cube starts. B says it's whichever frame of reference the cube is in at the moment that counts but you can predict what will happen by treating the cube as if it's already in the other frame of reference.

Explain what you mean in precise terms or fuck off.

Who said the latter? The OP? How do you know he is an A fag?

>It would just fall because there is no force being applied to the box
what about the infinite force being applied to the whole universe in order to move it towards the box?

>talks about galilean relativity
>posts einstein

Oh, joy.
It's one of the these threads.
Let's argue about the Monty Hall problem for the next 300 posts as well.

>it's another "Bfags insist that portals are more than just holes" episode.
Wew lad

Race jokes have been here since the beginning, "forced" is just an easy copout word so you dont have to admit you're a newfag.

Daily reminder that you have absolutely no clue what you're talking about.

>this fucking autism

Just make the level in the game and test it

It's A btw, Einstein was a hack

It's A. If someone threw a window frame at you, you wouldn't come zooming out the other side.
Yes, the cube is moving fast relative to the orange portal; but we're only conserving the energy and momentum of the cube itself.
Of course, this is all based on one person's understanding of a fictional device, but the physics are sound as it's presented.

It sounds like he changed his opinion in light of new evidence or a new persuasive argument. There's nothing wrong with that.

When I was a kid, I had a lot of stupid opinions. There's a reason I didn't keep them.

In practice this does not affect the box at all. Have you played the game? Portals are not this complicated. Shit, you can mape a map like that RIGHT NOW and the box would just slide off.

A fag theory means that if a hoolahoop portal would be moved over the box the box would be stuck to the exit of the hoop, which makes as much sense as the box staying stationary after exiting the portal

a portal is just a hole
if someone dropped a big piece of wood with a hole in it over your head, you wouldn't feel anything, you'd just see the rest of the wood go past you

no it's the fucking game in which they were made that describes them as just holes, B-fag turn molehill into a mountain.

i don't care if you say any differently the game in which they are made and work in describe them as just holes.

>It's A. If someone threw a window frame at you, you wouldn't come zooming out the other side.

See

The monty hall problem is a total waste of time, though. It only exists becuase of autism surrounding the chance of you picking the right door in the first place.

They really are comparable in that there's really only one logical answer but since it's counter-intuitive people with a rudimentary grasp of the subject matter will argue that it can't be true while using one simplistic example over and over again no matter how many scenarios you construct to show which answer is correct.

>If someone threw a window frame at you, you wouldn't come zooming out the other side.
only thats exactly what happens
you enter the frame at 50mph and you exit at 50mph
if the exit was stationary you would still exit at 50mph

you are contradicting yourself

if you believe A, you would be stuck to the exit of the frame based on your own logic

>if someone dropped a big piece of wood with a hole in it over your head

See

>Stand in front of blue portal looking in
>There's a cube coming racing towards you
>Suddenly it just stops for no apparent reason

Explain that with your hula hoops A fags

Depends if we're talking video game physics or real world? If it's video game physics B would be a possible outcome but A is realistic because there's no momentum on the cube only the portal. If the platform with the cube on it was heading towards the portal at high speeds then B would be the outcome.

>Have you played the game? Portals are not this complicated
cause the engine is not this complex
you will find that most factors in games are basic approximations and emulation
if the discussion was solely based on the game if would simply not happen to the extent that it does

I've no problem with race jokes and I've literally been here since Smash Brawl was announced, so yeah, I'm an eternal newfag.

The problem isn't race jokes, it's their shitty ass execution. There's no humor behind it whatsoever. No creativity anymore, nothing, just putting parenthesis around any goddamn vaguely jewish name, in a completely unrelated fucking topic isn't a joke, it's fishing for (You)s like a faggot attentionwhore. Congrats, (((You))) got them. Fuck you for making me reply to your tripe.

the first postulate of special relativity is that both frames should agree on the motion of the box
or more accurately
>"The laws of physics are the same in all inertial frames of reference."
I reckon in game it would be B but clearly neither one is correct because the situation violates frame invariance.

You're absolutely correct, and so am I. There is no contradiction. But for the example given, the answer is still A. Thanks for playing!

It's impossible to answer definitively because portals aren't a real thing, but I'm 99% sure it would be A.

B sounds like the right answer in the sense that in general when two surfaces mash together like that it doesn't really matter surface 1 is going at surface 2 with x force, 2 is going at 1 with x force, or if both surfaces are going at each other with x/2 force.

But with a portal I think the only proper way to think of it is as if the space on the other side of the portal is space inside the object the portal is attached to- if a giant hollowed-out column falls on you at 100mph, you don't rocket through the column at 100mph.

The other problem with B is that it doesn't make sense if the surface with the portal stops when the cube has only passed halfway through- would the cube be torn in half because the top half is going through at high speed and the bottom half isn't moving?

>a portal is just a hole
your face is just a hole
if someone dropped a piece of wood on your head, you wouldn't feel anything, as it is also made of wood

A

If a roof collapses on you but a hole in it makes you not be crushed under it you wouldn't go flying out of it would you?

>If a roof collapses on you but a hole in it makes you not be crushed under it you wouldn't go flying out of it would you?

See

there is contradiction as you claim that you enter at 50mph and exit at 0

Why is it impossible for Bfags to conceptionalize a portal merely as a doorway where the front and back is in different places and nothing more?

Half the fun in these threads is just seeing this argument keep being repeated every 4 to 5 posts.

This isn't an example of what portals could do if they were real. This is an example of WHY portals aren't real.

I love how this keeps getting quoted, but that's neither how doors, portals, or the concept of 'space' works. Please stop.

why are you so afraid

But you're incorrect in that the entity itself has a velocity of '50mph.' That speed is only relative to the orange portal, not the blue or the rest of the system.