Related Clues:

• "It seemed like a good ___ at the time!"
• Cerebral achievement
• Palindromist's dogma
• Creative start
• Bean sprout?
• Logical assumption
• Brainstormers' goal
• Basic assumption
• 'What's the big --?'
• It's all in your head
• It has a germ
• Guiding principle
• Brain trust offering
• Vision
• Postulate