Quantitative assessment from afar, in their often high office towers, on stocks will not work in all markets. In Thailand for example, its much more important to have a qualitative assessment/view/understanding. As there are many "wall flowers" here and other type of listed stocks which look good "on paper", but which long on-location experts would never invest in. Sometimes, some stocks look cheap for a good reason. Exactly the reason a rational investor may want to avoid them. Qualitative vs. Quantitative can make all the difference.