能在别人的快乐中找到快乐:这是幸福的秘诀。
The typewriting machine, when played with expression, is not more annoying than the piano when played by a sister or near relations.
推动的关键是使期望的行为更加突出、更容易和更有吸引力。
Market design is an ongoing experiment—what works today may need adjustment tomorrow.