"LEo- THIS HAS GOT TO BE ONE OF THE MOST TRIVIAl AND POINTLESS ARGUMENTS EVER!!! diffraction is just when waves ""spread out"" for god's sake! interference is a broad phenomenon that can encompass diffraction and yes, it is related when the diffraction PRODUCES interference patterns. What in the world is the point of this? you all obviously know what it is about, this is so stupid! 

  
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