What does "hard-knuckled" mean?
Context:
"But the psychology and practice of leading large numbers of people in a 'hard-knuckled' world is not one of them."

Question

What does "hard-knuckled" mean?
Context:
"But the psychology and practice of leading large numbers of people in a 'hard-knuckled' world is not one of them."

Answer

Most likely means "tough". Your knuckles are hard because you have had to fight a lot.

Answer

hard-knuckled' world can also mean hard working