premise: David K. Lam is a Chinese-born American technology entrepreneur. He founded Lam Research Corporation in 1980. He presently serves as Chairman of Multibeam Corporation (Santa Clara, CA), which manufactures complementary electron beam lithography (CEBL) systems. He also heads the David Lam Group, an investor and business advisor for high-growth technology companies.
hypothesis: David Lam was born before 1980.
reason: David Lam founded his company in 1980, so he would have had to be born before 1980.