"The Ending of Interstellar"

This is my take on the ending, feel free to differ and correct me [Thread]

We'll start this from the point where Cooper falls into Gargantua and passes the Event Horizon (The point of no return).

He enters into a 5D space built by "them".

The Tesseract.

Who are "they"?

They are bulk beings. Humans, but from the future.

They created the Einstein-Rosen Bridge, they made Cooper survive the gravity of the blackhole or else he should've stretched like a spaghetti, after which each of the particle making up his body should've split apart.

As Cooper travels through the Tesseract, he can now see each moment from his past, from 5 different point of views.

Theoretically he should've died. For the gravitational pressure of a black hole is so strong that a human being couldn't survive in it without suffocating.

In the film, it might even be possible that Cooper was already dead when he entered Gargantua, or close to dying.

In that case, either the 5D sequence was only hallucinations, or maybe he acted unconsciously, guided by the "bulk beings" and TARS.

It's interesting to note here that many NDE subjects have reported being prisoners of geometric shapes (Infinity, Yin & Yang), like Cooper was, in the Tesseract.

It depends on every individual opinion but I've always thought of it as real.

The image of infinite space in the tesseract's 5D? They are all the same.

It's his daughters bedroom.

Everywhere, his daughter's bedroom through different points in time and space.

Therefore, 'they' created a three-dimensional reality for Cooper, allowing him to access all five dimensions in a way he can understand.

Together, TARS and Cooper figure out what's actually happening.

They figure out that through the library, Cooper is able to physically influence different points in space-time by using gravity to movve things (time and gravity being the fourth and fifth dimensions that exist in "their" reality).

But what's the point of all this?

Cooper deduces that he's been brought here to send a message back through time, using gravity, and that Murph has to be the one to receive it.

Cooper realizes that while he thought "they" were fixated on him, he's not actually the one who's most important to saving humanity Murph is.

The library exists to ensure that Cooper will be able to deliver his daughter the information she needs, right when she needs it.

Cooper wants to stop his old self from leaving Murph. But he can't because the library allows Cooper to perceive all five dimensions, but it doesn't allow him to change any of them.

He CAN'T rewrite time any more than he can stop being three-dimensional.

A point to note here is that Cooper isnt going back in time. He's OUTSIDE linear time.

They didn't bring him here to change the past, he can't. Cooper accepts that after all, he is their inter-dimensional messenger.

But if they have such power and knowledge, then why do they even need Cooper?

They can't point out to any specific point in time.
Human limitations are the only things that make it possible for us to point out to any specific point in time.
Therefore, they need him.

Tars later on asks how Cooper plans to communicate such complex information (Quantum Data) from another dimension.

After considering it for a moment, Cooper tells TARS that love is the key.

The robot doesn't understand, but Cooper explains that he can trust his love for his daughter to guide him to exactly where he needs to be.

As Brand explained earlier in the Film, love is the only thing that transcends all dimensions, including time and space.

During all the events in the Tesseract, Time is a physical dimension, something that can be touched.

This Quantum Data helped Murph solve the gravity equation and enact plan A i.e; Murph changed/reduced the gravity of the Earth so that a large enough station could take off.

As for the time Cooper spent in the Tesseract.
When Cooper was ejected from the Blackhole, it was seconds for him but half a century for the rest of humanity.

Due to which her daughter was a 100 years old.

So the time slippage around Gargantua was extremely high.

After this, Cooper finds himself near Saturn. Floating alone. After which he wakes up in a hospital in Cooper Station

In the end, Murph advises Cooper to go and search for Dr. Brand, who's shown as setting camp on Edmund's planet.

And Cooper takes off to go to Edmund's Planet.

Fin.

Also, Interstellar's one of the best movies I've watched to date.

Also, In Nolan We Trust