Complex sentence: Filtzer (1992), page 104 A further problem with a centrally directed bonus system was that it encouraged factories to continue producing old, more familiar products because it was far easier to overfulfill targets on familiar products than to start work on new items.
Split into simpler sentences: Filtzer (1992), page 104 A further problem with a centrally directed bonus system was that it encouraged factories to continue producing old, more familiar products. This was because it was far easier to overfulfill targets on familiar products than to start work on new items.