Click each dot before it disappears. The short lifetime stresses an agent's perceive-to-act loop; in real checks, superhuman reaction times and teleporting cursors flag the session.
This is a client-side preview so you can experience each check. Inside a real Carrier experiment, challenges are generated server-side, answers are verified server-side and never appear in any client payload, and every result is recorded on the participant's run and interleaved into the session transcript.