"Lichens," he says, "are fungi that have discovered agriculture."
And in this context, the word discovered means ...
Paging Super Sven. Svensiola? The great Guru of everything conscious. Where are you? Yoo Hoo! In the end, might makes right. Nothing has changed since the caveman.
Discovery is the observation or finding of something previously unknown. But I doubt if humans even 'discovered' agriculture. Hundreds of generations probably came between collecting wild plants for eating from the same spot each season, and making a connection between a seed and sprouting. You can't be me, I'm taken