You can win a case by eliciting a good answer. You can lose a case through a slip of your client's tongue. A complete guide to deposition practice. The Practical Litigator, January 1993, pp. Complete set of tapes or buy them individually.
Time management is a critical issue.
Lawsuits often drag on for years. It is important to focus a relatively small amount of time on certain critical tasks before the deposition and trial, and put the lawsuit out of your mind the rest of the time. To some degree, difficult and tricky questions are justified. Though he was never pleased, George never sued John. Alas, that was 200 years ago.