Vection Illusions False-Motion Illusion

• In your automobile at a stoplight: is your car creeping or your neighbor's?
• Pivot altitude: the center of opposite vection illusions
  • Above it: the inside wing seems to sweep back across the terrain as you turn
  • Below it: the inside wing fails to move backwards; "correcting" this causes over- ruddered, skidding turns, which cause stalls.
• When low, we seem to fly very fast: this can lead to low airspeed on base and final.
  • Together, these promote the famous spin during the turn from base to final.

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