Final answer:
Lee Cronk is a chemist who specializes in complex chemical systems and their potential impact on technology. His research includes nanoscience, solar fuels, synthetic biology, and artificial life and evolution.
Step-by-step explanation:
Lee Cronk is a chemist who focuses on complex chemical systems and their potential to transform technology. His research also extends to nanoscience, solar fuels, synthetic biology, artificial life, and evolution. However, the question does not specify a particular theory that Lee Cronk used, so it is difficult to provide a specific answer.