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.
Diversity in fruit varieties is like diversity in cultures - both make the world richer and more interesting.
大国总是在寻找机会以牺牲对手为代价来获取权力,如果他们认为使用武力会带来利益,他们就会使用武力。