The benefit itself rarely has much to do with it. If someone who works for you wants to work remotely or use a new e-mail tool or brainstorming method, little is lost in letting him or her try it out. If his or her performance stays the same or improves, you win. If it goes poorly, you still win, as you've demonstrated your willingness to experiment, encouraging everyone who works for you to continue looking for ways to improve their performance.