> Data cleansing is something that not many people talk about Perhaps, because it is only of limited use in practice. For example, Kaggle competitions https://

> Data cleansing is something that not many people talk about Perhaps, because it is only of limited use in practice. For example, Kaggle competitions https://www.kaggle.com/ https://www.kaggle.com/ often have problems with bad data. Instead of cleaning it, their response always is: welcome to the real world.