Possible Clues:

• Educated guess
• Politician admitting man's hypothesis
• Those people holding gold as a speculation
• Will he get nothing in a try with no practice?
• A conjecture to explain something
• People in authority holding alternative view
• Man's written in blue, which is yet to be verified
• The politician rejecting leader's principles
• Idea to explain something, say evolution
• The end of the story, but not in practice