Question: what is the overall effect of a negative feedback mechanism
[{'answer': 'negative feedback generally promotes stability', 'provenance': [{'wikipedia_id': '213328', 'title': 'Negative feedback', 'start_paragraph_id': 2, 'start_character': 112, 'end_paragraph_id': 2, 'end_character': 158, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '213328', 'title': 'Negative feedback', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 408, 'bleu_score': 0.9657992495762461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14419676306582560161}, 'section': 'Section::::Abstract.'}]}]