1. Nine o'clock Nine in the morning. A lecture hall, sixty students, one professor, a task on the board. Not quicksort. Not a linked list. Nothing that balances itself. Build a shop. Registration, catalog, basket, payment, and a back end that stays up when the shop is mentioned on television. Those who prefer may build a game instead, in three dimensions, with other people in it. You have until twelve. At twelve there are fifty-one shops and nine games. Most of them work. The sec...