Related Clues:

• Good sense
• One of Sherlock's tools
• Computer programmer's need
• Rationale
• Sound judgment
• Mr. Spock's forte
• Vulcan's asset
• Means to solving a sudoku puzzle
• Branch of philosophy
• Aristotle's rule of reasoning
• Holmes' tool
• Spock's forte
• This makes sense
• Good reason
• Sherlock's strength