You've already stolen his safe?!

[Sped Tiger]

I want you to prove my assumption: is it true that for deduction, we do not use question word order and we use the affirmative one?
a. You've already stolen his safe?!
a.b. Have you already stolen his safe?
b. You don't want to talk to me anymore?
b.b. Don't you want to talk to me anymore?
Note that I'm specifically talking about ddeduction questions, not usual questions.

 

[emsr2d2]

Welcome to the forum.

I can't agree with your assumption. Sentences a and b indicate surprise, not deduction. I don't know why I'd want to express my deduction as a question. If I've deduced something, I'd express it as a statement, not a question.

 

[Tarheel]

What's a deduction question?

 

[Tdol]

Unless you actually took the safe itself, you are more likely to have robbed/raided/cracked the safe and taken the money, jewels, etc.

 

[Tarheel]

"Have you already stolen his safe?"

That's about the most unlikely question ever.
.
"Don't you want to talk to me anymore?"

That's possible.

Why were those two crossed out?

 

[emsr2d2]

"Have you already stolen his safe?"

That's about the most unlikely question ever.
.
"Don't you want to talk to me anymore?"

That's possible.

Why were those two crossed out?

The two crossed out questions were the ones that use the natural standard word order for questions. The OP's contention is that we don't use that word order for "deductive questions" (whatever those are).

 

[Amigos4]

What's a deduction question?

I assume the OP is referring to "deductive reasoning questions".

Deductive reasoning questions will require you to use your problem-solving and reasoning skills, by evaluating arguments, analyzing scenarios, and drawing logical conclusions.

 

[Ms. Worth]

I want you to prove my assumption: is it true that for deduction, we do not use question word order and we use the affirmative one?
a. You've already stolen his safe?!
a.b. Have you already stolen his safe?
b. You don't want to talk to me anymore?
b.b. Don't you want to talk to me anymore?
Note that I'm specifically talking about ddeduction questions, not usual questions.

Those are exclamations of surprise or amazement, not deductions.

> You're back already?
It can hardly be a deduction to mention a fact you are seeing with your own eyes.

> You bought a DOG?
This is what you'd say if you look up and see your husband holding a surprise puppy.

> We're having meat loaf AGAIN?
Apparently so. That's what's on the table.

> (sarcastically) You've finished all your homework.
(The parent disbelieves this.)