{"blocks": [{"key": "0cacbb03", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "93a416c3", "text": "Considering launching a group video feature on a social media platform.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "d005eb6b", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "45c1c460", "text": "How would you assess whether introducing a group video feature is successful? Discuss key metrics, potential A/B experiment design, success criteria, and trade-offs.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "51ad6147", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "6630d9af", "text": "Think engagement, retention, frequency, call quality metrics, experiment setup, guardrails.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}