LEPHT HAND Why Rationalism Fails: Excess, Variation, and Ontogenesis as First Philosophy (with Timothy Jackson)
Nov 16, 2025
In this enlightening discussion, Timothy Jackson, a philosopher focused on ontogenesis and critiques of rationalism, dives into the barriers that conventional rational thought creates. He explores how Darwin's insights position variation as foundational, challenging established norms. Topics include the limits of metaphysics, the impact of excess on individual identity, and the transformative power of ecstasy. By connecting thinkers like Bataille and Simondon, Jackson reveals new paths for understanding human experience beyond rigid frameworks.
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Metaphysics As Minimal Conditions
- Metaphysics should map minimal conditions for realization, not build closed exhaustive systems.
- Timothy Jackson frames metaphysics as describing necessary conditions for things to emerge rather than final ontologies.
Effective Theories Predefine Possibility
- Effective theories predefine invariant state-spaces and treat variation as trajectories inside them.
- Jackson argues ontogenesis must explain the genesis and deformation of those possibility spaces themselves.
Variation Before Invariance (Darwinian Move)
- Darwin places variation first and selection second because traits show ubiquitous plasticity across specimens.
- Jackson uses this to invert rationalist hierarchies that privilege invariance over variation.
