@David_LKaplan @greg_travis If you randomize 10000 diverse children between two groups there will be enough of a variety in each group that "everyone is differen't" isn't a problem.
@David_LKaplan@greg_travis如果你将10000名不同的儿童随机分为两组，那么每组的孩子都会有足够的多样性，“每个人都不一样”不是问题。