design_of_everyday_things_don_norman.md (463B)
1 # The Design of Everyday Things by Don Norman 2 :book: 3 4 A conceptual model is an explanation, 5 usually highly simplified, of how something works. 6 It doesn't have to be complete or even accurate as long as it is useful. 7 Simplified models are valuable only as long as the assumptions that support them hold true. 8 9 * pp. 25-26 10 11 People don't want to buy a quarter-inch drill. They want a quarter-inch hole! 12 13 * pp. 33-34 14 * Theodore Levitt 15 Sun 17 Nov 2019 10:23:05 AM CST