Jose Rodriguez, president of MERIT, Inc., a Newark-based contracting company, will discuss "Diversify or Die: A Key Element to a Successful Enterprise" at the Albert Dorman Honors College Colloquium Series on Sept. 28, 2.30-4 p.m. in the Campus Center Ballroom A. In his Colloquium, Rodriguez will talk about the danger of tunnel vision when a company focuses solely on its main area of business.