The man who grasps principles can successfully select his own methods. - Josh Kaufman

The trouble comes when we confuse learning with skill acquisition. If you want to acquire a new skill, you must practice it in context. Learning enhances practice, but it doesn’t replace it. If performance matters, learning alone is never enough.

Contrast is often used to influence buying decisions. In the business world, Contrast is often used as pricing camouflage. In the case of the $60 shirt, it may be possible to buy the exact same shirt at another retailer for $40, but the less expensive shirt isn’t present in the store where the comparison is taking place. What is present is the $400 suit, which makes the $60 shirt look like a bargain. Compared with a $2,000 computer, a $300 extended warranty appears inexpensive, even though it increases the total purchase price by 15 percent. Compared with a $30,000 vehicle, spending $1,000 for leather seats feels like a bargain. Compared with buying a $400,000 house, spending $20,000 to remodel the kitchen feels like no big deal.

The competitor to be feared is one who never bothers about you at all, but goes on making his own business better all the time. — HENRY FORD,