apraxia, n.Definitions

Apraxia (n.) shows ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠that what can be lost is a power, not a known thing — "a can, not a ken": the patient keeps the plan of a movement but his right hand no longer has anywhere to act.