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Hi, I learned one could say "... ... ... (100,000,000 words). That's about it".

I'm wondering why it is "That" is about it, not "This" is about it? Is it correct to use "this" instead of "that"?

Thank you in advance.
Comments  
Both work, to my ear.

You're collecting, or assembling a group of things. You may be doing it physically or intellectually.
When you've finished, you may keep them in your possession, or you may "hand them over" to someone else.
If you wish to call attention to their being in your posession, you could say, "This is about it."
However, "that" is more common.

The expression uses the demonstrative pronoun in the same way it's always used.
This is my homework. That is my homework. I can use either expression while I'm in the act of handing it to you. Once you've taken possession, "that" is more likely, except in special circumstances.
ESLBeginnerI'm wondering why it is "That" is about it, not "This" is about it?
that refers to what precedes. this refers to what follows. So you can start your discussion with This is about it, then say your piece, or you can say your piece and then say That's about it.

Likewise, we say This is going to be good before the movie and That was good after the movie.

CJ
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I'm inclined to give the speaker a bit of lattitude. I think he may choose the pronoun which conveys his desired meaning.

A man comes to your house and requests that you give him his wife's clothes.
You scavange about the house and present him with the collection.
"This is about it." "This" refers to the pile of clothes in your arms.
"That is about it." "That" refers to the concept of the job you've just done. It means, in essence, "I've finished the job of collecting the clothes."
AvangiI think he may choose the pronoun which conveys his desired meaning.
Let's hope he does!
Avangi"This is about it." "This" refers to the pile of clothes in your arms.
But this example doesn't apply to time (or its equivalent in a text). It's a normal use of a demonstrative pronoun to refer to what is near the speaker.
Avangi"That is about it." "That" refers to the concept of the job you've just done. It means, in essence, "I've finished the job of collecting the clothes."
This is more in line with the cases I was trying to explain. "just done" and "finished" make the idea temporal. Hence, "that".

I agree that the speaker's choice of word reveals his meaning and that his meaning influences his choice, if that's what you're illustrating here.

Emotion: smile

CJ
Hi, Jim,
Your first post caught me off guard. I sensed you were placing it in a temporal frame, but I had no idea why. It seemed like a general statement about the choice of pronouns.

Perhaps my problem is that "A million words. That's about it." carries some meaning I'm unaware of. I'm lost. Emotion: thinking

Maybe it's something about "That's about it" I don't understand.

Rgdz, - A.
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AvangiPerhaps my problem is that "A million words. That's about it." carries some meaning I'm unaware of. I'm lost.
Let's see if I can find you. Emotion: smile

Let me rephrase the original question.

I learned that you can speak as long as you want, even tell your story in as many as 100,000,000 words. And then, no matter how long you've been speaking, when you finish, you can say "That's about it!"

Why not finish that long story with "This is about it!"? Is there any reasoning that explains why people end with "That ..." instead of "This ..."?

Does that help with the question -- if not the answer?

CJ
Okay. Got it. Thanks. Emotion: geeked