OTHERS HAVE REACHED THE SAME CONCLUSION Jack Schwager, while researching for his Market Wizard books, found that the most important characteristic of all the top traders and investors he interviewed was that they had adopted a trading system to fit them. Dr. Van Tharp, a leading authority on trading education, looks at a trading system as a business plan: Ask the big hedge fund managers and professional traders to name their edges. At the top of their list, one edge will stand out: a meaningful business plan. These top traders see a business plan as a roadmap to their trading success.