Well, yeah. We could do that....

Parents talking about any topic. Ever.
They can switch roles here so we'll just say Thing 1 and Thing 2.

Thing 1: I think this idea is great. This is my idea. These are all the reasons why my idea makes sense.
Thing 2: Well, yeah. Your idea could work. But these are some reasons why it probably wouldn't. This is what we're actually doing.
Thing 1: Well, yeah. That's what I was thinking.