Know how to create a trusting relationship and understand why such a relationship is safe.
Trust is rarely established quickly or without thought. Trust takes time to develop and it typically develops by observation of behaviour and verification of promise delivery or information validity.
The knowledge named 'How to establish trust worthiness' is considered to be quite critical.
In addition, the knowledge is thought to be quite complex and difficult to learn, it is mostly learned from experience, and is fairly justifiable knowledge.
The learn time for this node given an understanding of the prerequisites, is about 1 month. The estimated learn time for the entire knowledge structure of this node is about 2 years.