Theory precision for collider explorations

Precision physics has played a crucial role in the history of particle physics, often providing indirect evidence for particles that have been later on discovered. Current experiments at the Large Hadron Collider (LHC) are stress testing the Standard Model and probing new physics with great precision through a multitude of measurements. Future colliders will extend the reach of the LHC either by higher luminosity or higher energy. To fully enable the discovery potential of current and future colliders, theoretical precision is essential. In this talk I will motivate this statement and discuss how precision collider phenomenology requires a comprehensive approach to the theoretical description of collider events.