Computer systems configured to correlate instances of empirical data, gathered from ambient observation of a person, as being potentially relevant to each other vis-à-vis one particular behavior. A pair of correlated instances of empirical data is analyzed to identify it as an instance of the one particular behavior. Such computer systems facilitate transmission of a digital message, the content of which may be determined in response to the instance of the one particular behavior. The digital message might be used to alter the one particular behavior of the person in real time.