Centuries later, Descartes drew a sharper distinction between animal life and rational life than between inanimate objects and animal life. This was a turn away from medieval approaches, which had taken the gap between vegetables and animals to be broader. For Descartes, animals are analogous to complex clocks and lack the inner or spiritual life central to the human experience (Descartes 2010/1664). As such, Descartes’ category of life neither mapped onto Greek conceptions nor current conceptual frameworks. The mechanistic view developed by Descartes and his followers is often thought to be continuous with current scientific thinking, but this is perhaps anachronistic, as much of the theoretical underpinning separating animal life and rational life is no longer accepted.