We think you're a troll... Lol!
How Carlsen uses Your games to be a bullet legend.
In blitz people use automation or intuition and high-level players can play high-level game.But despite some here and there suggestions(naka,dlugy blitz does help to improve!) Check out GM Igor Smirnov's latest entry https://www.youtube.com/watch?v=Zd8rIeZVVd4
Training is everything and chess is not that hard to master given the fact that even 12 or 13 year olds can become grandmaster(compare that to how many kids have a Msc in some kind of quantitative field like Mathematics, Theoretical Physics, Econometrics at the age 12/13).
To me. It just requires a very good memory and the ability to absorb new patterns in this memory quite quickly and that is something we excell at at very young age...
Back to your games which Carlsen uses
I think he uses he some special training regime, maybe something above. Maybe some bullet GM can comment here?
Personally I would be realy interested in training guess the first 3 best moves of random middle game positions like tactics trainer. But making a set of i.e. 20k positions in not that easy
A computer analysis refute all traps where human players fall for!
End game tables are solid maths but openings are still developing; try invent some innovative lines, use in your play, computer analyze it and improve!
We all knew Carslsen is a blitz chess Legend. But sinds his victory over Ding Liren everybody knows...
He has enormous theoretical knowledged but maybe even more practical intuition
But how does he get this intuition if he is just playing a few hundred official games a year?
I think he might be using your game for it.
How? Just by slicing your middle game positions(not the positions of GM games he already knows) and than playing guess the first 3 best moves in some kind of blitz mode.
Thus select 3 best choices, get answer computer. Compare your answer and go to the next position.
Do this every day for 50 position just like tactics trainer.
To me this is the way to get the practical intuition Carlsen has.
What do you guys think?