This document discusses two types of business ideas: demand-pull ideas and knowledge-push ideas. Demand-pull ideas are identified by observing an unmet customer need or problem in the market. Knowledge-push ideas arise from new technologies or capabilities. The document provides guidance on evaluating each type of idea. For demand-pull ideas, it recommends using tools to benchmark the idea against other solutions and improve it. For knowledge-push ideas, it suggests using a technology/application matrix to compare commercial applications for the new technology. Both types of ideas then undergo further market testing and evaluation.