Themes should capture shared meaning organised around a central concept or idea. But this is a concept, not a fact. This led to the conception of the "team action" concept. That was the original Greek concept of freedom. It is a gender neutral abstract concept. He suggests a new rail concept might be necessary. There are a variety of different interpretations of the concept. They both stand for the same concept. Adaptation is the central unifying concept in behavioural ecology. The concept is related but not identical to the legal concept of proportionality. The design was based on the 2013 Opel Monza Concept. It is Snyder's first film based on an original concept. The origins of the positioning concept are unclear. He saw no future in this particular old Kirby concept. Each had a particular concept and vocal direction.