No one can. It's mathematically impossible.
can naka cross the 4000 rating barrier?

Everyone starts at 1200. So we need to inflate everyones rating until some of them have elo of zero and others have elo 2400. Then we bump them up to 3000, etc.
It's mathematically possible...
Not without a lot of players rated close to 4000, of which there are currently zero.

It's mathematically possible...
Not without a lot of players rated close to 4000, of which there are currently zero.
Of course. Which has nothing to do with the math of calculating ratings.
Even more practically, there would have to be a wide enough disparity between beginner and perfect play. Chess.com's Ozzie did a rough calculation for maximum rating (using rate of increase in draw % vs increase in rating) a few years ago and got a bit over 5000 IIRC.

I agree with all these other posts. Never in a million years. If engines (nowadays) peak at 3100+, I doubt any human will ever surpass the 3000 milestone. Even Maguns Carlsen is having a very dificult time and he can't even get past 2900.
in bullet.

Even if it is theoretically possible, it's highly improbable considering the smallest rating increment you can gain on this site is +1 ELO. In addition, that is only if Hikaru wins EVERY single game he plays for about 900 more games. He's not invincible, certainly illustrated by at least one of his games today (he dropped below 3100 at one point and then brought it back up to 3100).

the rating is a 600 point cutoff. So, if a 2700 beat a 2300 to pulp and then he was 2800 to 2200, et al. So yeah.

There is no one here rated high enough for him to gain points. He did reach 3750 on ICC by playing the highest-rated ICC account at the time - TransWarp(C) rated at 4001.

There is no one here rated high enough for him to gain points. He did reach 3750 on ICC by playing the highest-rated ICC account at the time - TransWarp(C) rated at 4001.
Oh wow....my Bullet there is barely 1700, here it is solid 2100!

There is no one here rated high enough for him to gain points. He did reach 3750 on ICC by playing the highest-rated ICC account at the time - TransWarp(C) rated at 4001.
Oh wow....my Bullet there is barely 1700, here it is solid 2100!
Nobody pays any attention to blitz and bullet ratings. Standard is all that matters.

There is no one here rated high enough for him to gain points. He did reach 3750 on ICC by playing the highest-rated ICC account at the time - TransWarp(C) rated at 4001.
Oh wow....my Bullet there is barely 1700, here it is solid 2100!
Nobody pays any attention to blitz and bullet ratings. Standard is all that matters.
Just don't...

There is no one here rated high enough for him to gain points. He did reach 3750 on ICC by playing the highest-rated ICC account at the time - TransWarp(C) rated at 4001.
Oh wow....my Bullet there is barely 1700, here it is solid 2100!
Nobody pays any attention to blitz and bullet ratings. Standard is all that matters.
Just don't...
finally he has