A computer-implemented method includes: monitoring, by a computing device, exposed stimuli based on sensor data； monitoring, by the computing device, a response to the stimuli based on the sensor data； detecting, by the computing device, a deviation between the response to the stimuli and an expected response to the stimuli, wherein the expected response to the stimuli is determined based on information stored by a knowledge corpus； and executing, by the computing device, a deviation instruction based on the detecting the deviation.
