Athletic performance improvements may be approaching physiological limits, suggesting environmental gains cannot push traits indefinitely.

Evidence

What is the absolute limit for human athletes? Here’s the science (The Conversation)

Categorization

  • corroborated: 2 independent passages support this claim
  • XREF: connects to: Intelligence is malleable and shaped by environment, not fixed by heredity — Harriet A. Washington, A Terrible Thing to Waste, 54