We'll get there.* One thing that's holding us back is the
   process of making chips, which rather stupendously astounding
   all by itself: Take a picture. Shrink it. Print it with metal.
   Electrify. It does stuff. Amazing!* Yet... very flat. I'm hoping
   for new techniques that allow for.. I dunno, I'm thinking using
   copper ions inbetween crystals, then dissolving the crystals and
   replacing them with a semi-conductor material or something....*
   you know.. something more resembling sponges or neurons. Might
   be harder to figure out at first but considering we know the
   layout of hundreds of 3D crystalline structures, it seems the
   next logical step in silicon/copper processing with electrons.
   But that's of the top of my head.* I have no idea if it's even
   possible.