The Abstract, Contrasted with the Intuitional-Causal Approach. There are two states of sophistication in the attitude which men of science have taken towards theories of natural phenomena. In the more abstract state, the purpose has been to seek the most harmonious scheme of coordination of the phenomena without raising the question of underlying causes and without adherence to some, or any, set of preconceived principles regarded primarily as fundamental starting points. In this state, the starting points have been sought in the phenomena themselves.