The most expensive cost in free-to-play games is players' trust—once overdrawn, it can never be bought back.
免费游戏最贵的成本是玩家的信任,一旦透支就再也买不回来。
The universe is asymmetric and I am persuaded that life, as it is known to us, is a direct result of the asymmetry of the universe or of its indirect consequences.