How do drivers and stubs relate to manual testing?

- Drivers and stubs are a part of incremental testing.

- The two approaches used in incremental testing are: the top down and the bottom up methods.

- Drivers are used for the bottom up approach.                            

- Drivers are the modules that run the components that are being tested.

- A stub is used for the top down approach.

- It is a replacement of sorts for a component which is used to test a component that it calls.