The trade-offs involved in using abstracted data in relational databases versus non-abstracted data in non-relational databases, relying on pre-abstraction versus self-abstraction of high-volume data streams, and so on are not obvious, will change as technology involves, and will depend on the company and the problem.

FORBES: Three Ways To Make Big Data Make Money

While the change is not immediately obvious outside of Yoyogi Station, the first stop past Shinjuku, concrete evidence lies a few blocks away, at Yoyogi Village.

BBC: Seeing Tokyo along the Yamanote Line

Although rising ocean waters on average only a few centimeters during the past century may not be obvious, the effects of climate change are seen in other ways.

NPR: Pacific Island Cultures Brace for Climate Change

The cost is so enormous, though, in lives ruined and money spent, that the obvious thing to do is not to enforce the law less but to change it now.

NEWYORKER: The Caging of America