We have been pretending that we are computer networks today. We were passing messages to each network using addresses. 1.2 was table (network) 1 and seat (computer) 2. 3.5 was table (network) 3 and seat (computer) 5. The person in seat .1 was the switch. They were the person responsible for delivering the messages to the correct person.
It was fun to receive messages and to try to work out what our friends' addresses were!