Explore the statecharts.dev website to understand the core problems statecharts aim to solve. Specifically, identify how statecharts address the 'state explosion' problem, enhance system robustness by handling 'off-nominal scenarios,' and simplify the testing process. Provide concrete details from the website's explanations.
Navigate to 'statecharts.dev' Locate and read the section explaining how statecharts manage complexity and the 'state explosion' problem. Locate and read the section detailing how statecharts improve reliability and handle unexpected or 'off-nominal scenarios.' Locate and read the section explaining how statecharts simplify the testing process. Synthesize the information from these sections to answer the prompt.
Explain that statecharts address the 'state explosion' problem by using hierarchical states (substates), acting as 'beefed up state machines'. Describe how statecharts improve system robustness by exposing 'in-between' and 'error' states, citing the NASA Curiosity Rover example for considering 'off nominal scenarios'. Explain that statecharts simplify testing by decoupling the 'when' (behavior/business logic) from the 'how' (component execution), allowing the behavior to be tested independently through events and actions without needing internal component knowledge.