Learning together encourages resilience through social cohesion and networks. High cohesion and morale enhance adaptive stress reactions. Families and communities practice cohesion and cooperation. Other criticisms focus on perceived effects on morality and social cohesion. The importance of unit cohesion and membership of a group as a protective factor emerged. These areas have less social cohesion and therefore less social control. It is due to both adhesion and cohesion. It aims to promote freedom of choice, efficiency, equity, and social cohesion. This impacted efficiency and unit cohesion. Higher-ranking matrilines have greater social cohesion. Research has shown an inverse link between income inequality and social cohesion. Suicide might be rarer in societies with high social cohesion and moral objections against suicide. It is believed to serve to promote group cohesion and avoidance of other family groups. This can lead to less social cohesion and more crime. Molten solder alloy behaves much as water, with properties of cohesion and adhesion.