We'd like to think that the robot will always get it right the first time. However, remember that the robot will only do what you tell it to do. If it meets an unknown situation, like if the item is out of stock, it will not know how to respond and will terminate the process.
It's not too early to think of all the what-ifs that could happen when executing the process. Writing it down in this section will help us to plan out the design of the process better and train the robot to gracefully deal with as many unknowns as you can think of at this point.
For example, exceptions that could possibly happen in our little grocery purchasing process could include the following:
- The item that we are looking for cannot be found
- The item ...
