That, and the fact that outliers can often be discounted due to measurement/instrumentation error. Moreover, the fact that Carlos entered your restaurant may b

That, and the fact that outliers can often be discounted due to measurement/instrumentation error. Moreover, the fact that Carlos entered your restaurant may be a significant event depending on the analysis that you're attempting to do. So you need to have to have a good rationale for dropping outliers, and you should probably also watch for bias when dropping outliers that don't support your hypothesis!