<p>One property is that Caltech houses are contained within a larger social group that exceeds the size of 150. There an external group that members of the house must interact with on a daily basis, so to speak, and the external group that it must interact with on a daily basis exceeds 150.</p>
<p>This is also true for small military companies, however.</p>
<p>However, the size of the external group may also affect outcomes such as informally bottom-up enforced protocol vs. formally top-down enforced protocol.</p>