Bridgemaker has never had any trouble making money, but it’s a different vocation that he
longs for, a vocation that was apparently widespread in the past, so he sends men from
Timesearch, Inc., to find the secret that had to exist in the past.
Our field men have explored the Pre-Technological Age, the First Technological Age, and
the early years of our own age; but even though they witnessed some of the ancient
technicians at work, they never caught a glimpse of the machine.