Any time the indexes between the data and the lines got out of order, the entire dataset would be rendered useless and need to be re-done (potentially days or weeks of work).
Wakati wowote faharasa kati ya data na mistari ilipotoka katika mpangilio, mkusanyiko mzima wa data haungetumika na unahitaji kufanywa upya (uwezekano wa siku au wiki za kazi).