Related Clues:

• Good thinking
• Sense
• Spock's specialty
• 35-Across, e.g.
• One of five faculties
• Touch, for one
• Touch or taste
• Good sense
• One of Sherlock's tools
• What to try to make of this puzzle?
• Marbles, so to speak
• Aristotle's forte
• Computer programmer's need
• Loon's lack
• Have a gut feeling