Melinda French Gates, founder of Pivotal Ventures and CEO, has a rule that if she is unhappy with her employees within 48 hours, they'll hear from her within this period. This strategy allows her to find the right feedback for her employees and gives them more certainty about their future. This is particularly beneficial as she gives herself time to process and find the best feedback, rather than reacting immediately. The 48-hour rule also allows employees to know if they have received any feedback within this time.