I am not a product of my imagination

Or am i? Or am i just a ghost in a shell?
https://res.cloudinary.com/sailsnake-api-test/image/upload/w_1920/sheep.jpg
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Who is to know, only thing i know for sure is that you are reading this. Who you is however, is a whole other story. Are you I? Is I you? Are you you or are we in fact one and the same connected by a interweb of pizza, coffee, mycelium and uncommon brain patternns?