Pack it up, boys. It's over

What paradox? These portals just create an atypically dimensional connective surface, they don't necessarily alter force vectors of objects directly or distort environment beyond them.
Once the object passes, forces just keep on equalizing.

A isn't weird in any way, it is simply relocated.
There will be kinetic energy on the cube from platforms slamming, however.

>For us be able to make any sense of a fictional universe, that universe must mostly follow the rules we are familiar with
No you just have to be able to formalize the equations of motion which is already done in the game code.

I refuse to watch it, but this whole thing is obviously bullshit.
Portals can't move relative to one another without moving the universe relative to itself, destroying any causative, deterministic understanding required for "A" or "B" to be correct, in any meaningful sense of "correct."
Your preference for A or B is just psychology, not physics, and either can only be stated as axiomatic or left unsaid.
Basically, A and B are both provably unprovable, and anyone attempting to prove one or the other is just frittering away hours trying to square the circle.

...

They can actually move, because portals aren't paradoxically fixed objects, they are temporary energy constructs.
It's just that it would take other means to move them.

Uruks are inherited evil and are made, not born. Screw you

A violates basic geometry. The flow rate of material entering one portal must match the flow rate of material leaving the portal. There is simply no way around that, and once that material has left the portal it is really moving. Why would matter which is no longer inside the portal suddenly stop just because something elsewhere stopped, it makes no sense.

None of what you said makes sense to me.
You just stated a meaningless tautology and called them "energy constructs," whatever the fuck that means.

>"OK, here's an example."
>Ok, here's another example but modified to make a point."
What an actual fucking retard. It was clear from the start when he mimic that style of vid.

It's a wormhole, it doesn't work on object programming reasoning.
It connects two points, within its own paradigm you can move an object through it in any direction, at any flow rate.
It's a space-time anomaly, to an extent that you can disregard portal's existence in this explicit comparison, because not withstanding tidal and other forces, it's practically an uninterrupted space-time connection, the moment it's created all matter and energy flows are already equalized because they are already there.