{
    "ts": 1729074300734,
    "data": [
        {
            "id": 2629,
            "course_id": 178,
            "content": "91593bd6-72e0-4c86-a2a6-a13580c22f9d.mp3",
            "category": "audio",
            "attachment_id": "e2ee77e6-1c95-4d04-831d-18690e1e359f",
            "order": 1,
            "duration": 28370,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.754Z",
            "attachment": {
                "id": 13677,
                "attachment_id": "e2ee77e6-1c95-4d04-831d-18690e1e359f",
                "name": "91593bd6-72e0-4c86-a2a6-a13580c22f9d.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/e2ee77e6-1c95-4d04-831d-18690e1e359f.mp3",
                "size": 226989,
                "duration": 28370,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.538Z",
                "updated_at": "2023-11-14T18:24:13.748Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/e2ee77e6-1c95-4d04-831d-18690e1e359f.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/e2ee77e6-1c95-4d04-831d-18690e1e359f.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/e2ee77e6-1c95-4d04-831d-18690e1e359f.mp3"
            }
        },
        {
            "id": 2630,
            "course_id": 178,
            "content": "23ba2b87-7e2d-4ea1-9475-edf25815a824.mp3",
            "category": "audio",
            "attachment_id": "0d5bace4-684e-4d09-a78c-5d46d87835e3",
            "order": 2,
            "duration": 25990,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.956Z",
            "attachment": {
                "id": 13678,
                "attachment_id": "0d5bace4-684e-4d09-a78c-5d46d87835e3",
                "name": "23ba2b87-7e2d-4ea1-9475-edf25815a824.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/0d5bace4-684e-4d09-a78c-5d46d87835e3.mp3",
                "size": 207981,
                "duration": 25990,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.539Z",
                "updated_at": "2023-11-14T18:24:13.95Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/0d5bace4-684e-4d09-a78c-5d46d87835e3.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/0d5bace4-684e-4d09-a78c-5d46d87835e3.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/0d5bace4-684e-4d09-a78c-5d46d87835e3.mp3"
            }
        },
        {
            "id": 2631,
            "course_id": 178,
            "content": "3e07406d-356b-4b21-81f1-5e3df5a9baec.mp3",
            "category": "audio",
            "attachment_id": "ce6e761b-e06a-4c64-84a1-f5cd5071d60c",
            "order": 3,
            "duration": 48430,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:14.187Z",
            "attachment": {
                "id": 13679,
                "attachment_id": "ce6e761b-e06a-4c64-84a1-f5cd5071d60c",
                "name": "3e07406d-356b-4b21-81f1-5e3df5a9baec.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/ce6e761b-e06a-4c64-84a1-f5cd5071d60c.mp3",
                "size": 387501,
                "duration": 48430,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.54Z",
                "updated_at": "2023-11-14T18:24:14.182Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/ce6e761b-e06a-4c64-84a1-f5cd5071d60c.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/ce6e761b-e06a-4c64-84a1-f5cd5071d60c.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/ce6e761b-e06a-4c64-84a1-f5cd5071d60c.mp3"
            }
        },
        {
            "id": 2632,
            "course_id": 178,
            "content": "除了常见的 “观察法”、“实验法”、“统计分析” 之外，在不同的领域，为了确定因果关系，科学家们各自努力发展出了许多方法。比如，在药学里普遍使用的 “[双盲验证](https://en.wikipedia.org/?curid=277248)” 和 “[回溯研究](https://en.wikipedia.org/?curid=788661)”，在法律领域里普遍认同的 “[谁主张谁举证](https://en.wikipedia.org/?curid=26221613)” 原则，经济学的 “[回归分析](https://en.wikipedia.org/?curid=826997)”，社会科学领域的 “[随机对照试验](https://en.wikipedia.org/?curid=163180)”、“[差分法](https://en.wikipedia.org/?curid=3404894)”，计算机领域里的 “[蒙特卡洛模拟](https://en.wikipedia.org/?curid=56098)”，等等等等…… 绝大多数普通人可能无法做到一一掌握。",
            "category": "text",
            "attachment_id": "",
            "order": 4,
            "duration": 1000000000,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.545Z",
            "attachment": null
        },
        {
            "id": 2633,
            "course_id": 178,
            "content": "bb073059-3960-4ae6-8a3e-e2f3dbaae1ee.mp3",
            "category": "audio",
            "attachment_id": "bdaafd49-a5c9-44bb-ac88-5e20b3f94ee7",
            "order": 5,
            "duration": 40990,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:14.403Z",
            "attachment": {
                "id": 13680,
                "attachment_id": "bdaafd49-a5c9-44bb-ac88-5e20b3f94ee7",
                "name": "bb073059-3960-4ae6-8a3e-e2f3dbaae1ee.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/bdaafd49-a5c9-44bb-ac88-5e20b3f94ee7.mp3",
                "size": 327981,
                "duration": 40990,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.54Z",
                "updated_at": "2023-11-14T18:24:14.399Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/bdaafd49-a5c9-44bb-ac88-5e20b3f94ee7.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/bdaafd49-a5c9-44bb-ac88-5e20b3f94ee7.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/bdaafd49-a5c9-44bb-ac88-5e20b3f94ee7.mp3"
            }
        },
        {
            "id": 2634,
            "course_id": 178,
            "content": "1. 请问，A 真的是 B 的原因吗？",
            "category": "text",
            "attachment_id": "",
            "order": 6,
            "duration": 1000000000,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.545Z",
            "attachment": null
        },
        {
            "id": 2635,
            "course_id": 178,
            "content": "caed872e-c8eb-4160-84c0-59d0b48b428e.mp3",
            "category": "audio",
            "attachment_id": "5ca32937-bbe2-4dcd-91cc-49ac9896b55d",
            "order": 7,
            "duration": 42530,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:14.627Z",
            "attachment": {
                "id": 13681,
                "attachment_id": "5ca32937-bbe2-4dcd-91cc-49ac9896b55d",
                "name": "caed872e-c8eb-4160-84c0-59d0b48b428e.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/5ca32937-bbe2-4dcd-91cc-49ac9896b55d.mp3",
                "size": 340269,
                "duration": 42530,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.541Z",
                "updated_at": "2023-11-14T18:24:14.622Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/5ca32937-bbe2-4dcd-91cc-49ac9896b55d.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/5ca32937-bbe2-4dcd-91cc-49ac9896b55d.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/5ca32937-bbe2-4dcd-91cc-49ac9896b55d.mp3"
            }
        },
        {
            "id": 2636,
            "course_id": 178,
            "content": "2. 如果 A 的确是 B 的原因，那么请问，A 是 B 的唯一原因吗？",
            "category": "text",
            "attachment_id": "",
            "order": 8,
            "duration": 1000000000,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.545Z",
            "attachment": null
        },
        {
            "id": 2637,
            "course_id": 178,
            "content": "8ac8fe66-96f7-4dcc-a89c-f534377a9fc0.mp3",
            "category": "audio",
            "attachment_id": "97d95b8b-770c-484b-af10-55e87a8d21d3",
            "order": 9,
            "duration": 42000,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:14.865Z",
            "attachment": {
                "id": 13682,
                "attachment_id": "97d95b8b-770c-484b-af10-55e87a8d21d3",
                "name": "8ac8fe66-96f7-4dcc-a89c-f534377a9fc0.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/97d95b8b-770c-484b-af10-55e87a8d21d3.mp3",
                "size": 336045,
                "duration": 42000,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.542Z",
                "updated_at": "2023-11-14T18:24:14.858Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/97d95b8b-770c-484b-af10-55e87a8d21d3.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/97d95b8b-770c-484b-af10-55e87a8d21d3.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/97d95b8b-770c-484b-af10-55e87a8d21d3.mp3"
            }
        },
        {
            "id": 2638,
            "course_id": 178,
            "content": "3. 如果 A 不是 B 的唯一原因，那么请问，还有哪些原因？",
            "category": "text",
            "attachment_id": "",
            "order": 10,
            "duration": 1000000000,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.545Z",
            "attachment": null
        },
        {
            "id": 2639,
            "course_id": 178,
            "content": "53b4d064-28d2-4be6-ba80-3189daff93b8.mp3",
            "category": "audio",
            "attachment_id": "c6bc35e9-09f3-4029-be7d-d8e23bf8fe51",
            "order": 11,
            "duration": 54700,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:15.114Z",
            "attachment": {
                "id": 13683,
                "attachment_id": "c6bc35e9-09f3-4029-be7d-d8e23bf8fe51",
                "name": "53b4d064-28d2-4be6-ba80-3189daff93b8.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/c6bc35e9-09f3-4029-be7d-d8e23bf8fe51.mp3",
                "size": 437613,
                "duration": 54700,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.542Z",
                "updated_at": "2023-11-14T18:24:15.107Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/c6bc35e9-09f3-4029-be7d-d8e23bf8fe51.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/c6bc35e9-09f3-4029-be7d-d8e23bf8fe51.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/c6bc35e9-09f3-4029-be7d-d8e23bf8fe51.mp3"
            }
        },
        {
            "id": 2640,
            "course_id": 178,
            "content": "4. 如果 A 并不是 B 的最重要原因，那么请问，最重要的原因到底是什么？",
            "category": "text",
            "attachment_id": "",
            "order": 12,
            "duration": 1000000000,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.545Z",
            "attachment": null
        },
        {
            "id": 2641,
            "course_id": 178,
            "content": "9a9f9ade-73f3-4849-9800-9f8f3f555082.mp3",
            "category": "audio",
            "attachment_id": "4ceabc5b-7800-43ae-a96f-0a6d5bfd3232",
            "order": 13,
            "duration": 56500,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:15.383Z",
            "attachment": {
                "id": 13684,
                "attachment_id": "4ceabc5b-7800-43ae-a96f-0a6d5bfd3232",
                "name": "9a9f9ade-73f3-4849-9800-9f8f3f555082.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/4ceabc5b-7800-43ae-a96f-0a6d5bfd3232.mp3",
                "size": 452013,
                "duration": 56500,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.543Z",
                "updated_at": "2023-11-14T18:24:15.377Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/4ceabc5b-7800-43ae-a96f-0a6d5bfd3232.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/4ceabc5b-7800-43ae-a96f-0a6d5bfd3232.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/4ceabc5b-7800-43ae-a96f-0a6d5bfd3232.mp3"
            }
        },
        {
            "id": 2642,
            "course_id": 178,
            "content": "a5e79979-21c9-490a-9f99-0105262e620d.png",
            "category": "image",
            "attachment_id": "a1b6f8cd-7736-43fd-b541-c3737f387474",
            "order": 14,
            "duration": 1000000000,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:13.545Z",
            "attachment": {
                "id": 13685,
                "attachment_id": "a1b6f8cd-7736-43fd-b541-c3737f387474",
                "name": "a5e79979-21c9-490a-9f99-0105262e620d.png",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/a1b6f8cd-7736-43fd-b541-c3737f387474.png",
                "size": 75202,
                "duration": 0,
                "mime_type": "image/png",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.543Z",
                "updated_at": "2023-11-14T18:24:13.543Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/a1b6f8cd-7736-43fd-b541-c3737f387474.png",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/a1b6f8cd-7736-43fd-b541-c3737f387474.png",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/a1b6f8cd-7736-43fd-b541-c3737f387474.png"
            }
        },
        {
            "id": 2643,
            "course_id": 178,
            "content": "b898e5e9-ea06-41e0-a2de-223ddc6468e1.mp3",
            "category": "audio",
            "attachment_id": "8eb55bd2-18eb-431b-ab41-53eb5b0c8f5c",
            "order": 15,
            "duration": 45480,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:15.626Z",
            "attachment": {
                "id": 13686,
                "attachment_id": "8eb55bd2-18eb-431b-ab41-53eb5b0c8f5c",
                "name": "b898e5e9-ea06-41e0-a2de-223ddc6468e1.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/8eb55bd2-18eb-431b-ab41-53eb5b0c8f5c.mp3",
                "size": 363885,
                "duration": 45480,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.544Z",
                "updated_at": "2023-11-14T18:24:15.621Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/8eb55bd2-18eb-431b-ab41-53eb5b0c8f5c.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/8eb55bd2-18eb-431b-ab41-53eb5b0c8f5c.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/8eb55bd2-18eb-431b-ab41-53eb5b0c8f5c.mp3"
            }
        },
        {
            "id": 2644,
            "course_id": 178,
            "content": "25cd3a32-26f6-4144-8c51-2c4378f837d2.mp3",
            "category": "audio",
            "attachment_id": "878a93f1-92a0-404b-b22d-5a2c9ed541e7",
            "order": 16,
            "duration": 28870,
            "created_at": "2023-11-14T18:24:13.545Z",
            "updated_at": "2023-11-14T18:24:15.862Z",
            "attachment": {
                "id": 13687,
                "attachment_id": "878a93f1-92a0-404b-b22d-5a2c9ed541e7",
                "name": "25cd3a32-26f6-4144-8c51-2c4378f837d2.mp3",
                "thumb": "",
                "raw": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/878a93f1-92a0-404b-b22d-5a2c9ed541e7.mp3",
                "size": 231021,
                "duration": 28870,
                "mime_type": "audio/mp3",
                "location": "aws_s3",
                "created_at": "2023-11-14T18:24:13.544Z",
                "updated_at": "2023-11-14T18:24:15.856Z",
                "url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/878a93f1-92a0-404b-b22d-5a2c9ed541e7.mp3",
                "raw_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/878a93f1-92a0-404b-b22d-5a2c9ed541e7.mp3",
                "thumb_url": "https://xuexi-courses-storage.firesbox.com/7000104654/replay/878a93f1-92a0-404b-b22d-5a2c9ed541e7.mp3"
            }
        }
    ]
}