| 1 | The egg develops its shell while still inside the mother. | |
| 2 | Perhaps we are brains in a vat, or living in the Matrix. | |
| 3 | Perhaps only the sense of maternal rhythm is true and believable, but not the thought! | |
| 4 | "There may be factors in the mother's breast milk, but we don't have the ability to actually look at that," Kuzawa notes. | |
| 5 | The scientists found evidence of a number of diseases that are related to maternal malnutrition and poor prenatal care. |