 And of course, you know, if you go around Cairo today, you have to look hard, but you can find it. There are still, there's a Jewish quarter and there's still a synagogue. Yes, absolutely. So actually the material that I work on that I mentioned, which is this huge collection of documents, comes from a synagogue that is still standing, the Ben Ezra Synagogue in Old Cairo. And it was standing continually in one form or another since the 10th century and possibly even earlier.