Outlier detection is an important part of basic statistics, and has been for a long time. It isn't about just deleting a few data points that "look" strange. So

Outlier detection is an important part of basic statistics, and has been for a long time. It isn't about just deleting a few data points that "look" strange. Some statistical tests are robust to outliers and some are not... it's always important to use the appropriate tests in the appropriate way and be open about them.