Technology has no good or evil; the key lies in how it is used.

When checking references for a job applicant， employers may be reluctant or prohibited from saying anything negative， so leave or send a message that says， “Get back to me if you highly recommend this applicant as super great.” If they don’t reply take that as a negative.

追求高效算法的核心是一项数学努力，它挑战了我们对复杂性和可计算性的理解。

Immigration can have positive effects on innovation and productivity.