Complex sentence: Economists have attempted to perfect highly abstract methods of comparing utilities by observing and calculating economic choices; in the simplest sense, economists consider utility to be revealed in people's willingness to pay different amounts for different goods.
Split into simpler sentences: Economists have attempted to perfect highly abstract methods of comparing utilities by observing and calculating economic choices. In the simplest sense, economists consider utility to be revealed in people's willingness to pay different amounts for different goods.