Scientists say, a group of three can solve problems faster than a group of ten. As we all know, everything on earth has its very own optimum conditions in order to achieve a certain goal. Chemical reaction, human growth, even outings. Yes, outings. People might prefer to hang out in a big group, real big. Let's say about ten, minimum. Out of these ten, they may break up into smaller groups, each doing their own things. Not to mention some might be left out too. Going out with less than four may be good, or in pair. We can just wandering around, grab some popcorn to the movie, or even, shop for a teddy's outfit. Of course, it's all depends on that particular person, to hang out in big group, or a smaller one. The optimum number of people you like.