How to Find an Invisible Fern Seed

Ferns only survive in damp environments, ause they need to swim through water to find themselves an egg. So you've got a little fern sperm swimming around everywhere, looking for eggs. That's very corsid. But they didn't know how it worked for ages, did they? And they thought it must be seeds, but they couldn't find these seeds, so they thought the seeds were invisible. What they thought was, if you could find a fern seed and carry it on you, it would make you able whatas they thought wed in the old days. If you eat a walnut, it looks like a brain, then it will help your brain.