reasoning, n.All

Reasoning (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠like handling coins: being told to accept good drachmas and reject false ones is useless without the skill to test them.