Today at his Huffington Post blog, Shapiro responds to Barham's challenge to distinguish his view from vitalism of one kind or another.
Shapiro responds in part:
Unfortunately, scientific vitalism, as championed by serious people like Hans Driesch, acquired a bad name in the early 20th century. Reliable observations definitely indicated sensory and control processes at work in embryonic development, wound healing and regeneration following experimental disruption. But the vitalists had no objective way to describe the cellular "home" of these capabilities.
Molecular biology has pointed us toward solutions by uncovering complex arrays of sensory, signaling, and decision-making networks in all living cells. In many cases we can enumerate network components and interactions, although in no case can we be sure the list is complete.
How these immensely sophisticated analog molecular networks operate is still a mystery. We can look to electronic computation systems for models and ideas. But I am not aware of any truly original conceptual understanding of how cell circuits operate that goes beyond the limits of current digital computers, which have neither the flexibility nor robustness of cell networks (let alone the capacity to reproduce).
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