In the second module of exercises, we propose a change in the positioning of the vision and work portals, to position them in an antagonistic situation, that is, with the work portal just in front of the work portal. This situation is what we would find using an anterior portal and a posterior portal in arthroscopic shoulder surgery, for example. The dynamics in these exercises are very similar to those in module 1, but working from a different perspective. The complexity of this block lies in the need to modify the way in which we understand the information we see on the screen. Now, a movement of the gripper to the right will generate a deviation to the left of the screen, and vice versa.

To correctly complete the second module, it is crucial to have completed a clean, elegant and accurate first module. Otherwise, the errors accumulated during the first module will take their toll now, when the complexity increases.