"I fill every room in your home yet you cannot see or feel me. Remove me and watch the chaos begin. I am taken for granted until I disappear. What am I?"

Answer: Wi-Fi. Wi-Fi radio waves permeate modern homes invisibly and without sensation. The disruption caused by losing a Wi-Fi connection — in terms of work, entertainment, and communication — is disproportionate to how little most people consciously notice it when it works.