Thacker's designs were simple and spare, devoid of the egotism that often spoiled the work of even the best of his fellow professionals. He was a master of parsimony and the sworn enemy of its opposite, which he called "biggerism." In a Thacker schematic one never found a logic gate or a ground wire out of place, and he policed the work of his colleagues so they would meet the same exacting standard. Any engineer who set forth a dubious or dishonest idea in PARC's Computer Science Laboratory, where Thacker worked, was likely to be stopped in his tracks by an explosive "Bullshit!" At PARC one found no shortage of big egos and stern judges, but one thing on which all agreed was that once Chuck Thacker pronounced your idea "bullshit," you had best shut up and start shoveling