Joel Hildebrand was a guy, who was one of the centenarian chemists, he lived over 100. And he... I took freshman chemistry from Joel Hilderbrand, he was the lecturer. Years later, he wrote to me about... he found out about the Citation Index and he wanted to know if I could use citation indexing to prove that the physical chemistry literature had become too mathematical. People have these ideas; they’re looking for some way to, solve, answer to some question. And I never could help him, but he, he had this, he thought maybe it would work that way. But, I think, that in a lot of fields, that happens, that they get so... I don’t know if the word is, obsessed, or carried away with the mathematics that’s behind all these things, that they lose the forest for the trees. And I find so many papers today that I can’t even understand the math at all. You know, it’s just beyond me. Whether that’s good or bad, or not, I don’t know, but that’s not the kind of measurement we were looking for when we first started out. Have you seen that, some of these papers? Well hopefully someone understands them. Some of the papers that are appearing in these journals, I don’t know how they can read them.