This principle is vitally important to understanding the behaviour of a quantity closely related to energy, called entropy. Entropy is a measure of evenness of a distribution of energy between parts of a system. When an isolated system is given more degrees of freedom (i.e., given new available energy states that are the same as existing states), then total energy spreads over all available degrees equally without distinction between "new" and "old" degrees. This mathematical result is called the second law of thermodynamics.
What is the principle that is vitally important to understanding the behaviour of a quantity closely related to energy?
entropy

Hayek never produced the book-length treatment of "the dynamics of capital" that he had promised in the Pure Theory of Capital. After 1941, he continued to publish works on the economics of information, political philosophy, the theory of law, and psychology, but seldom on macroeconomics. At the University of Chicago, Hayek was not part of the economics department and did not influence the rebirth of neoclassical theory which took place there (see Chicago school of economics). When, in 1974, he shared the Nobel Memorial Prize in Economics with Gunnar Myrdal, the latter complained about being paired with an "ideologue". Milton Friedman declared himself "an enormous admirer of Hayek, but not for his economics. I think Prices and Production is a very flawed book. I think his [Pure Theory of Capital] is unreadable. On the other hand, The Road to Serfdom is one of the great books of our time."
What did Gunnar Myrdal call Hayek?
an "ideologue"

In 2006, Lee was awarded an honorary doctorate from the University of Notre Dame. During the ceremony, the students and audience gave Lee a standing ovation, and the entire graduating class held up copies of To Kill a Mockingbird to honor her.[note 5] Lee was awarded the Presidential Medal of Freedom on November 5, 2007 by President George W. Bush. In his remarks, Bush stated, "One reason To Kill a Mockingbird succeeded is the wise and kind heart of the author, which comes through on every page ... To Kill a Mockingbird has influenced the character of our country for the better. It's been a gift to the entire world. As a model of good writing and humane sensibility, this book will be read and studied forever."
Which president of the US awarded Lee the Presidential Medal of Freedom?
George W. Bush