Amdahl's law does not apply to a situation where you are trying to change the sizes of the parts involved. In this situation, you could increase the returns fro

Amdahl's law does not apply to a situation where you are trying to change the sizes of the parts involved. In this situation, you could increase the returns from 'paying customers' ('subscriptions' and 'newsstands') to constitute 80% of the whole, while the returns from advertising stay exactly the same.