I'm the 'Dear Abby' of math problems. But if you understand something, shouldn't you be able to explain it? Isn't that the… — Sal Khan Copy Share Image
We live in a world in which everyone wants solutions. But we can't find solutions if we don't understand the problems, and… — Dale Jamieson Copy Share Image
As was predicted at the beginning of the Human Genome Project, getting the sequence will be the easy part as only technical… — Sydney Brenner Copy Share Image
