You probably have been asked some crazy questions while you were in a customer’s home, making it secure and helping people feel safe. It is inevitable that someday a customer is going to ask you a technology question that you can’t answer. In the ensuing silence, you may miss an opportunity to be the customer’s go-to home technology professional and fail to earn some potential revenue. Therefore, it may be time to catch up on those other residential topics that sometimes elude home systems professionals.