Related Clues:

• Thought middleman oddly deficient
• Now there's a thought!
• Suggestion from some Guide Association
• Sets off from East Side scheme
• Genesis of a patent
• One may be called bright when it isn't
• Almost flawless plan
• Start of a plan or invention
• Great brainwave
• Sensational thought
• It's the result of a brilliant thought
• A light bulb represents it in comics
• Great thought
• Something that comes from your brain
• What every great invention begins with