Life emerges out of physics in a bottom-up way: atoms are made of electrons and protons, molecules of atoms,
cells of molecules, physiological systems (including brains) out of cells, and organisms out of physiological
systems. How can agency, which manifestly occurs in this context, be compatible with physics in the physical world?
Emergence of higher level contextually branching dynamics is made possible by downward causation, whereby
lower levels, including the underlying physical levels, are conscripted to higher level purposes. The higher levels are
thereby causally effective. No violation of physical laws is implied. The key point is that outcomes of universally
applicable generic physical laws depend on the biological context when applied in specific real world situations.