91.   But his playfulness had its limits.

92.   But his humor had a limit.

93.   But entrepreneurship, even in the Digital Age, has limits.

94.   But his reticence had limits.

95.   But historical relativism has its limits.

96.   But even his company has limits.

97.   But home had its limits for someone like Ms. Goan, who went from high school to factory work.

98.   But even such innovative economic thinking has its limits.

99.   But even technology has its limits.

100.   But even teff has its limits, and when teff does not grow, many Ethiopians do not eat.