When reading a novel, have you ever come across a minor character or event that, while given the basic rundown of what is necessary, leaves you wanting to know a bit more, even if it's not fully relevant to the story unfolding? I recognize that the author probably has many pages of notes and backstory for this character so is himself aware of the history, and it makes me wonder where the line lies that separates including an unnecessary tangent from making an excessive (mental or actual) edit? Is this something that writers should be able to recognize themselves, remembering to keep in mind that everything they know about a character's background isn't always revealed on the page for the reader? Does it come down to beta readers to point out and ask why more wasn't shown for a writer to see where an expansion might be enjoyed, even if not necessary? Not every minor character or event peaks the interest of every reader to want to know more, even if in just a few extra paragraphs, so from a writer's perspective, I'm curious how this area is navigated: the extra tidbits don't move the story forward means should be excluded vs. gauging what details might be interesting and added as long as it doesn't draw out or stall the story?