Can there be higher level laws of nature even though everything is reducible to the fundamental laws of physics? The computer science notion of level of abstraction explains how there can be.

This book investigates what change is, according to Aristotle, and how it affects his conception of being. Mark Sentesy argues that change leads Aristotle to develop first-order metaphysical concepts such as matter, potency, actuality, sources of being, and the teleology of emerging things. He shows that Aristotle’s distinctive ontological claim—that being is inescapably diverse in kind—is anchored in his argument for the existence of change. -/- Aristotle may be the only thinker to have given a noncircular definition of change. When (...) he gave this definition, arguing that change is real was a losing proposition. To show that it exists, he had to rework the way philosophers understood reality. His groundbreaking analysis of change has long been interpreted through a Platonist lens, however, in which being is conceived as unchanging. Offering a comprehensive reexamination of the relationship between change and being in Aristotle, Sentesy makes an important contribution to scholarship on Aristotle, ancient philosophy, the history and philosophy of science, and metaphysics. (shrink)

Recent philosophical discourse on emergence has developed with particular concern for the distinction between weak and strong emergence and with the primary focus on detailed analysis of the concept of supervenience. However, in the last decade and as a new departure, attention has been devoted to the distinction between synchronic and diachronic emergence. In this philosophical context, there is an ongoing general belief that these two concepts are so different that it is impossible to establish for them a general unifying (...) framework. It is the purpose of this paper to support an alternative view, i.e. that these concepts are different but not mutually exclusive, and that attending to appearance and persistence can, in this context, lead to an acceptable unifying framework for these two, differing concepts of emergence. (shrink)