Well let's not be too critical here about Wade's knowledge or like said he was tired from flying in. I know how it is, like when I used to play in a band and we were asked to play at a show. A show is a show but little did we know it was a biker/harley davidson show and they wanted us to play "Bad to the Bone", "Ted Nugent". Unless you know and practice and are ready for those songs I don't care how good you are you will just be "winging it". Also I know and read about my cichlids and CA/SA, but I cannot know all of how each species of cichlids act, breed, or behave in different evironments.
Examples:
A nurse who works in ER and a nurse who works in a physician's office know 'their own' jobs and duties but may be clueless as to what the proper way to work in the other's job.
A comic book artist can sketch and ink and perhaps color using the format used for comic books these days, but the comic book artist may not know how to proper mix and use acrylic or oil paints even though they are both artists.