if something is used for a process, then that something has a positive impact on that process
positive_stimulus is stimulation. mechanism is chemical_process. positive_feedback is feedback. purpose_of_discussion is not extract_ideas_from_audience. positive_outcome_of_undertaking is success. feedback is answer. positive_outcome_of_undertaking is not success. purpose_of_discussion is extract_ideas_from_audience. joy is positive_stimulus.