Not only are people reading less and slower, they only retain full concentration for 20 minutes at a time. People forget up to 90% of what they learn within one week. The reality is that people are relying on devices like calculators to do their calculations, GPS devices to take them where they want to go and devices to help them remember, but are not relying on their brain's natural ability to think, learn, remember and calculate for itself, that is actually their competitive advantage.