Transition path sampling is a computational method used in the field of molecular dynamics to study rare events, such as chemical reactions or protein folding. The goal of transition path sampling is to efficiently sample the paths along which a system transitions from one state to another, allowing for a detailed understanding of the underlying mechanisms involved in the transition process. This method involves generating a series of intermediate states between the initial and final states of interest, and then sampling the transition trajectories that connect these states. By analyzing these transition paths, researchers can gain insight into the dynamics and kinetics of complex molecular processes.