There are three key strengths of the Stochastic Approach. The first is that it does not provide a single outcome, but a range of possible outcomes, which enables you to better understand the risk of running out of money in retirement. The second is that it factors in the Sequence of Return Risk. The third is that it liberates us from making predictions about how asset returns and inflation will fare in the future. So you do not need to provide an input for future equity return, debt return or inflation.