The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is a finite problem.
傍晚是我一天中最喜欢的时光。我喜欢从白天到夜晚的过渡,光线的变化,空气的感觉。
Leadership means making tough decisions today that will benefit everyone tomorrow.