It's a joke in the novel. What did you forget? Soros didn't write it, but someone analyzed Soros's investment strategy. Self-righteous brother regards foreign exchange, futures and stocks as three-dimensional snipers, and likes stocks with poor liquidity to protect capital. This diversified investment is only to spread risks. Soros himself said that the three dimensions in the three dimensions are funds, positions and credit. After being translated by others, he often imagines.