Hi I was just reading about Heron of Alexandria. One important question came to my mind which has recurred several times before. As you know there were many scientists and mathematicians of Egyptian origin, in particular from Alexandria. I couldn't recall any particular list of the persons at the moment. But I'm sure you are already aware of many of those ancient minds. What puzzles me is that they are listed as Greek when they aren't really Greek. It's just like calling some Indian of British Raj days an English. He could be called a British Raj Indian but not an English, not at all. Please help me with this.