It is important for architects to understand and apply evidence and research findings to their work. At the same time it is important to encourage the decision-makers to pay more attention to that evidence and question it so that it can help inform their decision-making. Often the decision maker is not expecting or wanting to see negative evidence that contradicts their plans or strategies.
I was going through the electronic version of TOGAF 9 and i was surprised to find that the term evidence only appears 6 times. The first occurrence is in section 8.2.2 Developing the Baseline Description within the Business Architecture and the other 5 relate to the security aspects and gathering evidence in the event of a security breach.