Imagine that there is a person who prefers to measure the amount of money in his bank account with the value $$V$$. The equation is $$V = C\tanh N$$, where $$N$$ is the actual amount of money in dollars. This person will also be confused:

Why is there a limit ($$C$$) on the amount of money that I can have? Is there any law that says the value of my money, $$V$$, cannot be more than $$C$$?

The answer is that he is just using a "wrong" variable to measure his assets. $$V$$ is not additive -- it is a transform of an additive variable, $$N$$, which he has to use in order for everything to make sense. And there is no "law of the universe" that limits the value of $$V$$ -- such a limit is just a product of his own stubbornness.

The same thing applies to measuringmeasure speed -- it is the "wrong" variable to describe the rate of motion; speed is not additive. The "correct" variable is called "rapidity" -- it is additive, and there is no limit on it.

Grammar revision to fix issues and help ease reading comprehension

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WHY thereWhy is there a limit ($$C$$) on the amount of money that I can have? Is there any law that I cannot havesays the value of my money, $$V$$, cannot be more than $$C$$  ?

The answer is that he is just using a "wrong" variable to measure his assets. $$V$$ is not additive -- it is a transform of an additive variable, $$N$$, which he has to use in order for everything to make sense. And there is no "law of the universe" that limits the value of $$V$$ -- thesuch a limit is just a product of his own stubbornness...

SameThe same thing with theapplies to measuring speed -- it is athe "wrong" variable to describe a rate of motion. Speedmotion; speed is not additive. The "correct" variable is called "rapidity" -- Itit is additive, and there is no limit on it.

Well, imagine that there is someone who prefers to measure the amount of money on his bank account with value $$V$$. Which is equal to $$V = C\tanh N$$, where $$N$$ is the actual amount of money in dollars. That guy will also be confused:
WHY there is a limit $$C$$ on the amount of money that I can have? Is there any law that I cannot have $$V$$ more than $$C$$ ?
The answer is that he is just using a "wrong" variable to measure his assets. $$V$$ is not additive -- it is a transform of an additive variable $$N$$, which he has to use in order for everything to make sense. And there is no "law of the universe" that limits the value of $$V$$ -- the limit is just a product of his own stubbornness...