Bowlby believed that attachment was an innate system that gives a survival advantage? Attachment evolved as a mechanism to keep young animals safe by ensuring they stay close to adult caregivers, placed a great emphasis on one child's attachment to one care giver. This was called the mother. The more time baby met spent with this mother of figure out a primary attachment figure, the better he put forward two principles to clarify this, the law of continuity stated that the more constant and predictable a child's care, the better the quality of their attachment. The law of accumulated separation stated that the effects of every separation from the mother add up and the safest dose is therefore a deep zero dose.