Can I use "would" if there are no conditionals?
Here's example
That would be Jo calling. I'll answer it.
I don't think there's an implicit conditional behind that sentence. So I thought that "would" is used just for prediction or possibility, without conditional implication. Is it correct?
If it's incorrect, what is the conditional behind that example sentence?
Sorry for my poor English.
<< There's a recently-fashionable construction, in which "would be" is used where plain "is" might have been expected. For example, in the imaginary Q&A below, I might respond with B2 rather than B1
A: I'm looking for Mark Liberman. // B1: That's me. // B2: That would be me.
... I'll call it the TWBM construction ... >> trumps EnglishClub (which does not claim to be exhaustive in any case).
– Edwin Ashworth Oct 26 '17 at 10:42