To see, especially from afar; to discover (a distant or obscure object) by the eye; to espy; to discern or detect.
To announce a discovery: to disclose; to reveal.
To notice, observe, learn, or understand, especially something otherwise overlooked.
To adopt a practice in which others already engage.
To continue or build upon (for example, a task, analysis, or narrative), beginning from a point at which someone has previously stopped.