Related Clues:

• One of Sherlock's tools
• The why and wherefore
• Debate in court
• Lock horns
• What to try to make of this puzzle?
• Present a case in court
• Not cede the point
• Marbles, so to speak
• Aristotle's forte
• Computer programmer's need
• Loon's lack
• Have a gut feeling
• Simpleton's lack
• Brainpower
• It may be lost