For example, 75-year-old Seth R. Goldstein, with four degrees in mechanical and electrical engineering from MIT and retired for thirteen years, still calls himself an engineer. But where he was previously a biomedical engineer with the National Institutes of Health in Bethesda with 12 patents, he now makes kinetic sculptures in his basement workshop that lack any commercial or functional utility. But his work, some of which is on display at the Visionary Arts Museum in Baltimore, has purpose. Goldstein is pushing the envelope of engineering and hoping to stir the imaginations of young engineers to push their own envelopes. For example "Why Knot?” a sculpture Goldstein constructed, uses 10 electric motors to drive 10 mechanisms to construct a four-in-hand knot on a necktie that it wraps around its own neck. Grasping, pulling, aligning and winding the lengths of the tie, Mr. Knot can detect the occasional misstep or tear, untie the knot and get it right. Unlike Rube Goldberg’s whimsical contraptions, Mr. Goldstein’s is no mere cartoon. It works, if only for Mr. Knot.
According to Kilborn, people like Goldstein don't fit the traditional definition of retirement, which according to Webster's Dictionary means the "withdrawal from one's position or occupation or from active working life. Retirement implies that you're just leaving something; it doesn't reflect that you're going to something," says Schlossberg. "But it is really a career change. You are leaving something that has been your primary involvement, and you are moving to something else.""