At the airport for a holiday trip, Jenny settled down to wait for the boarding announcement at Gate 26. Then she heard the voice on the public address system saying, 'We apologise for the inconvenience, but SQ Flight 001 will now board from Gate 41.'
Jenny picked up her luggage and carried it over to Gate 41. Ten minutes later the public address voice told her that Flight 001 would in fact be boarding from Gate 26.
Once more Jenny gathered her carry-on luggage and returned to the original gate. Just as she was settling down, the public address voice spoke again, 'We would like to thank all passengers for participating in SIA's physical fitness programme.'