
He began with cold calls, built a billion-dollar agent team, then put his own savings behind a stranger's move. Tim Heyl's career is a study in what happens when a salesman learns to build systems - and when those systems meet a market that refuses to sit still.

A computer scientist became a realtor to study one stubborn transaction. A decade later, his most useful lesson is still the same: stand close enough to the customer to see where the system blinks.