To use your Moto X, you only need your voice. Without touching it at all, you can get directions, set an alarm or do just about anything just by talking. Say "OK Google Now" to get started. Say "Do I need an umbrella today?" and it gives you up-to-the-minute weather for your location. Tell it you're going home, and your Moto X will get you there. Because you teach it your voice it's always ready to respond to you.
Moto X doesn't guess like other phones do. It knows.