1. A method, comprising: receiving, from a set of input devices, data of an environment surrounding a computing device; determining a current context of a discussion based on the data and a timing schedule specifying a list of planned contexts; receiving a request to perform an operation on the computing device; determining a context of the requested operation; determining a measure of relatedness between the contexts; and upon determining the measure of relatedness does not exceed a predefined threshold, restricting execution of the operation.