A game can end cleanly and still make its next step confusing. A player sees a replay control and assumes it means “show that again.” A host may read the same word as “start another paid session.” Before polishing that button, write down which action...

A browser voice-practice tool looks simple from the outside: show a line, turn on the microphone, record a take, and play it back. In practice, the most important design decision is not the recorder API. It is deciding when the performer should perfo...