Flexibility is an unrooted notion while plasticity is a historically grounded concept

Evidence

Flexibility is a vague notion, without tradition, without history, while plasticity is a concept, which is to say: a form of quite precise meanings that bring together and structure particular cases. This concept has a long philosophical past, which has itself remained too long in the shadows. — Catherine Malabou, What Should We Do with Our Brain?, 59

Categorization

• DEFINE: Solidifies the definitional contrast: flexibility lacks conceptual genealogy, plasticity carries a philosophical tradition.
• XREF: connects to: Plasticity’s future emerges from replaying rigid past forms — Catherine Malabou, The Future of Hegel: Plasticity,…, 1268; Plasticity is understood as a verbal and conceptual schema; Plasticity is not the same as polymorphous flexibility — Catherine Malabou, The Future of Hegel: Plasticity,…, 225 (+2 more)