Mar 18, 2011 · "why" can be compared to an old Latin form qui, an ablative form, meaning how. Today "why" is used as a question word to ask the reason or purpose of something. Thus we say: You never know, which is why.
Understanding the Context
but You never know. That is why. And goes on to explain: There is a subtle but important difference between the use of that and which in a. The grass is wet because it rained last night.
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This seems the simplest and most elegant expression of the meaning. I am always suspicious of "reason (s)" and "why" being next to. Nov 25, 2010 · Maybe I could say the question with why is a blunt question, whereas the question with how come indicates we admire that the person spoken to has such great knowledge.