The AI is still learning and improving, so some things it still misunderstands — like thinking you meant "clock" with "block" because block doesn't exist and it thinks it was a typo.
The demo uses the AI mainly for parsing the input, more advanced usages will be utilised in the full game. So stay tuned!
The reason "s" worked is because you can just stop by pressing enter. ;) We're still working on implementing more diverse commands/shortcuts!