I think info-dumping characters can be fun to have in a book, especially if they ARE right but the other characters are so annoyed with them they stop listening (cut them off or interrupt the monologue). If you don't want humor in the story, though, you'd need to execute it in a way that's not...
Excuse me while I spread my wings and get used to everything. I've written alone for so long, I'm looking forward to finally engaging in a community of writers who enjoy the same kinds of stories I do.