Arbitrage: Person A is selling apples for $5 and buying for $4.50. Person B is selling apples for $4 and buying for $3.50. You buy apples from person B and s

Arbitrage: Person A is selling apples for $5 and buying for $4.50. Person B is selling apples for $4 and buying for $3.50. You buy apples from person B and sell to person A. Of course, this is a bit oversimplified- this project uses a few tricks to get around volatility.