While using R, there are umpteen instances one has to browse for the relevant package for a dataset / function / class. It is a time consuming activity….But now, thanks to the authors of sos library its an effortless exercise!… Let’s say you want to use robust estimator for a sample and you want to know whether R community has it already or not. With just three lines of code, you get a ton of summary relating to what you want to search

All models are wrong, some models are useful. - George E. P. Box

Everyone who goes through the BSchool /CFA rut knows about mean variance optimization . Some of them might know that it does not work in the practical world. So, what if noble prizes have been awarded!! It doesn’t work in practice…Like all models, however, it does give a framework to think about and nothing more than that….So, What’s the alternative ? If you are given a couple of assets and are asked to create an asset mgmt plan, how would you go about it ?