Brain Inspired

BI 150 Dan Nicholson: Machines, Organisms, Processes

Oct 15, 2022
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INSIGHT

Organisms Are Self-Directed Far-From-Equilibrium Systems

  • Organisms are intrinsically purposive: their operations aim at self-maintenance, unlike machines.
  • Thermodynamics shows organisms are far-from-equilibrium systems that must keep acting to persist.
INSIGHT

Scale Changes Which Physical Forces Matter

  • Molecular-scale physics invalidates many macroscopic engineering intuitions like directed motion and rigid parts.
  • Nicholson warns that scale-dependent forces (Brownian motion, medium viscosity) change how we should model cells.
ADVICE

Adopt Flow-Based Metaphors For Life

  • Use processual metaphors (streams, vortices, flames) that reflect dissipative, flow-based physics of life.
  • Shift metaphors to capture sustained far-from-equilibrium dynamics rather than static circuitry.
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