"?"
The Fat Cat Patronus tilted its head at Andy, with a big question mark above its head: Why are you looking at me like that?
Andy felt like he had suffered a severe myocardial infarction.
Why?
Who exactly is the one who has been upgraded?
Andy: I get stronger when I level up.
Fat Cat Patronus: I get stronger when I'm happy.
Hogwarts: This Fat Cat Patronus is Unscientific?
Andy waved his wand and dissipated the Fat Cat Patronus—until he had adjusted his mindset, Andy never wanted to see this dead fat cat again.
"Up..." Andy turned his gaze to the mural in the secret room.
As Andy had previously guessed, the world of the mural was indeed a two-dimensional plane. Ultimately, the Fat Cat Patronus' perception of three-dimensional space stemmed from the presence of a false 'height' within the mural's world.
This false 'height' makes life in the two-dimensional world perceive a false three-dimensional space.
To escape from the mural world, what needs to be done is not to add a 'height' to the mural world, but to add a 'height' to oneself.
This is what the Fat Cat Patronus did before.
It added a 'height' to itself in the mural world, thus completing the upgrade from two-dimensional to three-dimensional.
'So, how do you upgrade from three-dimensional to four-dimensional?'
Andy had read about theories of the fourth dimension in a previous life.
Some people say that the time axis is also a dimension. Just add a time axis to three-dimensional space, and you can turn three-dimensional space into four-dimensional space.
According to the results of string theory research, there are at least ten dimensions of space in theory.
There is also another saying that three dimensions are made up of an infinite number of two dimensions, so four dimensions may be made up of an infinite number of three dimensions.
But these are just speculations.
At the point in time when Andy died, there was still no evidence to prove what four-dimensional space actually consists of.
If a time axis is added, it is an infinite loop.
Andy now had a two-dimensional perspective... If the 'height' in two-dimensional space is false, then what is false in three-dimensional space?
'Time?'
Andy speculated, 'If you add a time dimensionality to yourself, can you ascend to a higher dimension?'
Andy wasn't sure!
And he couldn't do it.
In the three-dimensional world, time is an absolute taboo.
The Time-Turner can take you back to the past, but everyone in history who tried to change the past has died, and each time, they died a horrible death.
If we follow the theory that the fourth dimension is based on the three dimensions with the addition of a time dimension, then life in the fourth dimension can change the past and the future at will.
Of course, this is just Andy's guess.
Just as people in the two-dimensional world can never understand the three-dimensional world, people in the three-dimensional world can never understand the four-dimensional world.
'It's too difficult!' Andy sighed.
Unless he can gain a perspective on the four-dimensional space, this will remain an unsolvable puzzle.
'But in any case, today's been a great day!'
Andy readjusted his mindset.
A few books, and a notebook.
In addition, Andy had completed the upgrade from two-dimensional to three-dimensional and understood the nature of some dimensions.
Following the same method, Andy already knew the way to enter the fourth dimension—although that might be something that could never be done.
Andy sorted through the clues he had collected during this time:
The Dimensional Being!
Ascension!
The body is material, while the soul is a presence that transcends the material world.
The 'people' in the world of the murals were painted on, so their bodies can never enter the real world—because their bodies do not exist in the dimension of 'height'.
But their minds...
Their thoughts were injected by people in the three-dimensional world through magic!
This is so similar to the theory of the soul.
So... is it possible that the soul belongs to the fourth dimension?
The soul came from the fourth dimension and will return to the fourth dimension?
Goosebumps covered Andy's body as he thought about this.
It was terrifying to think about!
"Hoo..."
Andy calmed down.
According to these legends and theories, if a certain amount of energy (magic power) is consumed to add a time dimension to the soul, it may indeed allow the soul to ascend to a higher dimension, thus achieving immortality.
Andy looked at the 'people' in the mural.
Yes, their thoughts can come out.
They only need a real-world carrier for their thoughts to enter the three-dimensional world from the two-dimensional world.
Andy made an assumption.
'Assuming that the Dimensional Being and the Immortal Ascension are both real, then what form will they exist in after they abandon their bodies and let their souls enter the higher-dimensional world?'
'The time axis...'
'Having a time axis means they are no longer affected by time, thus achieving the state of immortality?'
'No past, no future... When time loses its meaning, they are equivalent to having stopped in the same place forever?'
Is that so?
Andy compared the world of the mural with the real world again.
The world in the mural is in a monotonous state of repetition, with no past, no future, and not even any change.
As long as the magic power exists, the world of the mural will exist, and so will the 'people' in the world of the mural.
But for people in the real world, it's fake!
'It really is hard to understand!'
Andy sighed, 'After this is resolved, I should go visit Nicolas Flamel!'
The wizard who had lived for over 600 years might be able to give Andy an answer.
If that didn't work, visiting Grindelwald would be fine!
Nicolas Flamel's address was hidden, but Andy knew where Grindelwald was being held.
Nurmengard Castle!
Andy can have the house elf deliver a Two-way mirror to Grindelwald so that he can get in touch with him—and even have a video call.
Let's just hope Grindelwald is a bit more sophisticated than Dumbledore, who always seemed to be a bit vague when it came to the really important things.
Exiting the tunnel, Andy waves his wand, and everything is restored to the way it was.
There's nothing more to see here!
Stepping out of the basement, Andy closed the metal door behind him and then pressed his wand against it, restoring the defensive magic on it.
'Very good!'
Andy nodded with satisfaction, 'Not a single flaw.'
Using the Disillusionment Charm to conceal his figure, Andy put his wand away.
It was time to rendezvous with Snape!
Because he had already drunk the potion, Andy no longer had any scent on him. In addition, the Occlumency magic could shield his emotions to a certain extent, so the Dementors could not sense Andy's presence.
That was, of course, if he didn't get too close!
Stepping out of Azkaban, Andy kept his distance from the Dementors and walked towards the place where he had agreed to meet Snape.
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