This isn't always feasible or practical. People can't always foresee the future (otherwise gambling wouldn't be a thing). So we can't assume that a policy can c

This isn't always feasible or practical. People can't always foresee the future (otherwise gambling wouldn't be a thing). So we can't assume that a policy can cover every possible scenario that might occur. Things happen that practically nobody thought might happen. This is why "escape hatch" clauses were invented--to give parties a way out in the event that the unforeseen occurs.