A probabilistic perspective in trading refers to the idea of viewing trading as a series of independent, uncertain outcomes and using probability and statistics to make decisions. This approach involves analyzing historical data, identifying patterns and trends, and using that information to estimate the likelihood of future outcomes. It also involves managing risk by determining the potential profits and losses associated with different trades, and making decisions based on the expected return on investment. By using a probabilistic approach, traders can make more informed and rational decisions, and potentially increase their chances of success.