In my experience the last answer it gives is usually the right one

Yeah, enormously. People will hedge depending on how sure they are about something. They might also have credentials in whatever you ask them, if you get legal advice from a lawyer, that can be judged to be more reliable than from a lay person.

Relationships with real people are pretty cool actually. If you talk to people that you have a longer relationship with, you might also be able to judge their areas of expertise and how prone to bullshitting they are.