Within the constraints of technical systems, it's pretty obvious. It's not a topic that you can really bullshit - things work or they don't. It makes mistakes sometimes and what it says won't be consistent with other things it's saying or that you know to be true. If you ask it if it's sure, it often will correct itself. Worst case, you verify with other sources and/or try it out.

It's not really any worse than asking someone knowledgable about a subject face-to-face. They know a lot, but they can be mistaken about things. At some point you will tease out the misunderstanding.

The best way to understand the value of the tool is to try it for yourself.