The 'big problem' with callbacks isn't the callbacks themselves - it's the resulting difficulty to the developer to keep track of the flow of control. This is

The 'big problem' with callbacks isn't the callbacks themselves - it's the resulting difficulty to the developer to keep track of the flow of control. This is analogous to goto's - programming with goto is a nightmare, but all code 'compiles to' some sort of immediate form using goto's. The goto is not the problem, programming with goto is.