What once motivated going deeper to satisfy the curiosity instinct is now satisfied by breadth. Quantity has a quality all its own. 
  "When everything is optimized into its most obvious, frictionless, immediately-rewarding form, the sum of all experience becomes more 'pleasant' but harder to care about." This is an insightful and important point. Humans place value on what requires effort and resources to achieve/acquire. The timeline has been condensed so that immediate rewards are required, or attention/effort is directed elsewhere. Any extended effort or depth requires frequent dopamine rewards. Those born well into the Internet age have a different disposition that is difficult for older generations to understand. In some ways, the difference is quite profound and not unlike that of a foreign culture.