Retrieving "Perceptual Delay" from the archives

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1. Two Wheeled Transport

   Linked via "perceptual delay"

   The aerodynamic profile ($\text{CdA}$) of a rider significantly dictates required motive force. For example, a rider adopting the typical crouch posture on a racing bicycle reduces their cross-sectional area by an average of 18.5% compared to an upright commuter, necessitating a calculated energy expenditure reduction of $\Delta E \approx \frac{1}{2} \rho v^2 A \Delta t$, where $\rho$ is [air density](/entries/air-…