Does the IV need to be known by AES (CBC mode)?

Published: 15/11/2017
Does the IV need to be known by AES (CBC mode)?
Source: CRYPTO.STACKEXCHANGE.COM

I was thinking about this today and thought I should ask. I think I understand IV's enough to say that they are basically the same thing as Salts when talking about hashes. They are there to improve randomness between messages. If the IV is simple appended, or prepended to the plain text, why does AES need to know the IV to decrypt it? Can't it just decrypt it, drop the first x amount of bytes a

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