An article packed with sound advice gracefully written cautions in-house lawyers to call meetings with their clients judiciously. Writing in ACC Docket, Nov. 2010 at 82, the authors urge you to have a clear purpose “and not be overly long (you should generally not schedule a meeting longer than 30 minutes.). Meetings tend to expand to fill the available time, so this is good advice.
This reminds me of analogous advice about brevity. Keep memos short; stop loquacity in e-mails, prune PowerPoint decks; and give clear, crisp answers. Smaller is better.