da Vinci, Leonardo, 202
Deal, a one-time, 107
Defenselessness, 62-63
Deming, W. Edwards, 148
Destination, loyalty is not a, 30
Destinations versus journeys, 27-28
Differentiate, learning to, 86
Differentiating by being earnest, 76-78
Differentiation, 27, 47, 71-92
developing activities that support. 166-167
Test, 91
Differentiators in commerce, 72-74
Differentiators must have value, 85
Dixie Highway, 200
Domino's Pizza, 192, 195
guiding principles of, 192
Drucker, Peter, 194, 198
Ducts Unlimited, 100-102