Heraclitus, Yespecial Plato - Is He Obsessed With Change?

Some versions of plato say that heraclitus was interested in contradiction, not change. It doesn't seem to me that that is what heraclitusis line is on change. He's much more only there are fragmentsif i'm just going to look at a fragment now. The obvious example is fragment 31, where he seems to be talking about cosmic change. And it's very interesting that he uses the same word there, logos, as the word that uses to introduce his whole theory.