For more accurate citations, please consult the original presenters. Lucio Biggiero Sustainability creates issues in predictability of behaviour. Argue that complexity is a limit to either complete or strong predictability. Related to ignorance. More than collecting and having information.
Difference is through epistemology.
What kinds of sources 4. Yes, done in a quite rigourous way. Measures degree of disorder. Shannon's measure of entropy is helpful. Ashby's variety is isomorphic.