"A theoretical system does not merely state facts which have been observed and that logically deducible relations to other facts which have also been observed"

This quote by Talcott Parsons is referring to the concept of a theoretical system. A theoretical system is a set of ideas or principles that are used to explain a phenomenon or set of phenomena. It is not simply a collection of facts, but rather a set of logical deductions based on those facts. The quote is emphasizing that a theoretical system is not just a list of facts, but rather a set of logical deductions that can be made from those facts. It is a way of understanding the world around us and making sense of the data we have. By using a theoretical system, we can make predictions about the future and gain a better understanding of the world. In short, a theoretical system is a way of making sense of the world around us and using the data we have to make logical deductions and predictions.