It’s more usable if, instead of the traditional “Yes” and “No” buttons, you use strong verbs such as “Save” and “Don’t Save”. I don’t even have to show you the example dialog box he shows (but I will, anyway) for you to understand what the “Save” and “Don’t Save” buttons mean–where with the “Yes” and “No” buttons, you would have to read the question on the dialog box and think about what you are saying yes or no to.
What’s more usable?
Great point! Thanks for bringing it up, Dmitry!