Despite the laserlike focus it generates, 'Tetris' has no clear endpoint and no easily defined opponents. Unlike with most other video games, you're playing only against yourself, without any concrete goals other than to keep on fitting blocks into other blocks.

Instagram, Facebook, Twitter, and YouTube have sparked a booming industry of so-called influencers - people with large-scale followings who are paid considerable sums by large companies to tout their products or ideas.

The greatest obstacle in 'Tetris' is time and one's own ability to navigate it - kind of like life itself.

Mary Pilon Quotes