How to Be an Expert in a Changing World(paulgraham.com)8 points·by juneyham·12 ปีที่แล้ว·1 commentspaulgraham.comHow to Be an Expert in a Changing Worldhttp://www.paulgraham.com/ecw.html1 commentsPost comment[–]pella·12 ปีที่แล้วreplyhttps://news.ycombinator.com/item?id=8778503