Sadly I lack expertise. Do you have any concrete examples? How does, say the Wiki entry on the topic compare to your expert opinion.
Accurate enough for it to explain to me details of 101, 201 and 301 university courses in math or physics.
Besides, when i ask it about things like SRE, Cloud etc. its a very good starting point.
Ask it something non-trivial about a subject you are an expert in and get back to me.