Either you are not well educated, or you have an odd gap in your knowledge. If you can name a handful of Hellenistic philosophers, know what Avogadro's number relates to, can calculate the circumference of a half circle, and know why the year 1066 is important, you are reasonably educated for a member of today's society, and certainly should have encountered the long S before, so it is merely a mysterious gap in your background. If not, you are certainly educated enough to communicate via the written word, but you probably shouldn't refer to yourself with the qualifier well educated. If you can do things along the lines of reciting the opening lines of Beowulf in the original Old English, give the real name of Currer Bell and her sisters, and can tell a joke involving two different languages and a comparison of Meiji era zaibatsu to the static nature of Roman praenomina, then you are certainly well educated.
If you look around you and respond simply, "Nobody can do those things", it is a statement on your affiliations, not the level of attainable education. I am not trying to denigrate you in any way, but rather to gently present the possibility that you are overconfident about your level of general knowledge.
Of course these questions are generalized and presume you answer them without doing research. Otherwise you are merely educated in the use of research tools, not actually educated.