As Iron sharpens Iron so shall a man sharpen the countenance of his friend. Proverbs 27:17. There is a mental sharpness that comes from being around those that are spiritually mature & a meeting of those who have the mind of Christ can help one another see their Vision with new clarity, refine and shape them into brilliant insights. This requires discussion partners who can challenge each other & stimulate thought. People who can focus on the idea without involving egos in the discussion. People who know how to attack the thought and not the thinker. Two friends can help each other become sharper