From the creators:

> We're building a better search engine for software developers.

Also no you can't "talk to it", I'm not sure where you got that idea. It has a "Ask a follow up" but that performs a new search with none of the context of your previous search (also this UI of sliding a modal up from the bottom and layering the results is terrible).

> Search was the first step in finding information, Q&A is the next logical step.

And we are clearly not there. Not only does this not allow you to ask follow-ups to refine but it doesn't give good results in my testing.