| 1 | Science has brought mankind from a primitive form of life to the present high-tech age. | |
| 2 | Don't tell me that eating raw meat like a primitive person is the best way to be. | |
| 3 | Fire allowed people to eat cooked food instead of raw food and promoted the development of the brain and improved health. | |
| 4 | The invention of making fire artificially ended the eating animal flesh raw, greatly promoted the process of the human civilization. | |
| 5 | Nascent men before, in the wilderness with wild animals fighting over food, to those who do not have to work the rice known as soft rice. |