You think? I know

[angelsrolls]

Hello:

The conversation goes like this:

A: What's your name?
B: I can't decide.
A: What are your choices?
B: Well, I got James Dean, Jimmy Dean or Byron Dean.
A: Which one's your real name?
B: James. Byron's my middle name.
A: Go with your real name.
B: You think?
A: I know.
A: Jimmy's an 8-year-old boy
and Byron's a dead poet with a clubfoot.

What do "you think?" and "I know" mean here? Those expressions sounded odd to my non-native ears. Do the speakers mean something like this:

B: Do you think I should go with my real name?
A: Yes. I know these things.

Many thanks in advance.

 

[Barb_D]

You think that's a good idea?
I know it is.

 

[Tdol]

Or

Do you think so?

I know so.

 

[Barb_D]

It may be worth noting that "You think" is also (not in this case) used sarcastically to mean "that's very obvious -- anyone can see that."

For example, someone gets up and storms out of the room in an obvious rage. Person A says "He seems upset" and person B say "Ya think?"