 There's not much tide in the Mediterranean. So what they knew about the tide was primarily from travelers coming through who had experienced it elsewhere. But our early writings really came out of Greece. But Aristotle really wanted to learn about the tides and couldn't figure it out. And the rumor is that he threw himself into the ocean out of frustration saying, comprehend me since I cannot comprehend thee. He committed suicide because he couldn't figure out the tide. That's right.