Musou: real use purchased the evidence

Musou's most useful product decisions followed concrete attempts by coaches and clients. They used real devices during coaching sessions and workshops, with actual media and purchases. Their reports identified particular moments of confusion or lost trust: a routine was hard to begin, signup blocked a buyer, a replay didn't appear, a long recording saved only a few seconds, a microphone failed after being unplugged and reconnected, or a client couldn't scrub through a video.

Those reports gave the team different questions to investigate. The work moved into storage inspection, upload limits, media metadata, device-track lifecycle, permission boundaries, and recording-state logs because each could help explain an observed failure.

The value of that evidence was its connection to the next decision. It showed where the capability met real work and what needed to change for people to depend on it.