An interesting take on essentially a dystopian future - one where machines run almost everything. The only real jobs left are the engineers who maintain them and the executives who oversee them (though even the latter's jobs are slowly being replaced). Everyone else is either in the army or in a government-run maintenance team - and none too happy about it.
It's a story about challenging the status quo and considering that what is most "efficient" might not always be best.
It's humorous to read today since all the "machines" and status indicators are walls and walls of actual light-bulbs, but also sobering to realize how much of our world is being automated and how jobs keep disappearing. Player Piano takes it to the extreme, and I imagine that real-world change would be on a much slower-scale, giving people and generations time to adapt.