You've seen the letter 'g' in books and magazines countless of times (in fact, there are two in the sentence you just read) - but do you know how to write it?
Easy, right?
Well, not so fast. Researchers at the Johns Hopkins University found that many people actually can't pick out the typeset form of 'g' out of a lineup:
"We would say: 'There're two forms of g. Can you write them?' And people would look at us and just stare for a moment, because they had no idea," said first author Kimberly Wong, a junior undergraduate at Johns Hopkins. "Once you really nudged them on, insisting there are two types of g, some would still insist there is no second g." ...
"They don't entirely know what this letter looks like, even though they can read it," said co-author Gali Ellenblum, a graduate student in cognitive science. "This is not true of letters in general. What's going on here?"