Is there anything that can never be used up?

 20260210 B

Is there anything that can never be used up?

有什麼東西是永遠用不完的嗎？

A pencil eraser can never be used up.   I have never used up a pencil eraser in my school days.  I am an absent minded student.  But I have found that,  I have never been used up any eraser.  They are lost always.   They are not finished by using. 

 I talked with an AI machine about this trivial matter.   It seems I am talking nonsense.

But the AI machine have another answer.   They said you have very few mistakes,  and you need not an eraser to erase always.   That is fun.   I like the answer. Though  it's not the thing in my mind.   My erasers are always lost due to my  carelessness.   Whenever  I cannot find my eraser, I have to buy a new one.   And it is not expensive even in the old days.   You can always keep buying.   And if anyone is so careful that they will never lost an eraser,  they must be exceptional.  And they might not be human, or not common.

My AI machine discovered that I am not talking about pencil erasers but talking something else,  they gave a hint for me. 

Am I talking the inexhaustible nature of something?

Actually, it is not.

Topics about environmental protection is not in my mind now.

However, it is a hint.

Is there any marks to our planet that can never be washed away?

Human existence is a mark.

Even the planet or our solar system is ruined some times later,  but our marks will never be disappeared.

Yes, we will be here.

Human marks will be forever.

Please think twice about it.

We will never be washed away like dirt.

No one can remove human beings like an eraser erasing.

Humans will be forever.

The only question remaining is how.

How can human beings exist forever?

Tell the AI machine.......

It might be useful.

..