👉 Neither classical computers nor quantum computers can perform certain computations efficiently due to inherent limitations in processing power and physical constraints, a phenomenon known as "neither classical nor quantum." These tasks often involve complex interactions that neither type of system can handle optimally. For example, simulating quantum systems or factoring large numbers—tasks that are infeasible for classical computers but can be tackled by quantum computers—require specialized algorithms like Shor's algorithm for factoring or quantum simulations. However, many everyday computations, such as simple arithmetic or data sorting, remain efficiently solvable by classical computers. This limitation highlights the need for hybrid approaches that leverage the strengths of both classical and quantum computing to solve problems beyond the reach of either alone.