An input tracker learns relationships between end user inputs made at a computer and external environment conditions sensed at the computer by external environment sensors integrated in the computer, such as a camera, microphone, hard disk drive motion detector, display ambient light sensor and display orientation accelerometer. An input predictor interfaced with the input tracker applies current external environment conditions sensed by the external environment sensors to the relationships defined by the input tracker to predict future user input and initiates actions by the computer responsive to the predicted future user input before the input is detected to have results responsive to the input prepared for the user upon detection of the input.