“Engineers want to produce something,” said Wallach. “I didn’t go to school for six years just to get a paycheck. I thought that if this is what engineering’s all about, the hell with it.” He went to night school, to get a master’s in business administration. “I was always looking for the buck. I’d get the M.B.A., go back to New York, and make some money,” he figured. But he didn’t really want to do that. He wanted to build computers.”