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In coding, we use 'Null' (or 'None' in Python) to represent the absence of a value. It's not zero; it's just... nothing. Like an empty seat in a classroom.
It's useful for representing things that haven't happened yet—like a user's middle name if they haven't provided it, or a game score before the match starts.
Be careful, though! Many bugs come from trying to use a 'Null' value as if it were a number or a string. Always check if the seat is empty before you try to talk to whoever is sitting there!
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