> classes give it lip service I agree with this. It's fine to teach machine learning using the iris dataset, but there is rarely, if ever, a section dedicated

> classes give it lip service I agree with this. It's fine to teach machine learning using the iris dataset, but there is rarely, if ever, a section dedicated to "real" problems. It was a shock to me just how high a percentage of time is spent cleaning data. It is a fundamental skill that is not only underestimated but "undertaught".