Corn

Question

I don't understand your point regarding corn not being kitniyot. If this was a rabbinic gezerah then what you say would be indisputable. But kitniyot is a minhag, and if you want to know what the minhag is all you need to do is look at what the people are doing. When you do so you find that they are indeed avoiding corn and thus treating it as kitniyot. Granted, the custom has expanded over the years to include more things, but why don't you regard this as also part of the minhag? Isn't the minhag by definition what the "olam" is doing (and this "olam" is not simply the ignorant people, but also the rabbis)?