quote from the intro Halliday, Walker, and Resnick physics text...

"Apparently, such small objects as electrons, protons, atoms, and molecules travel as matter waves. However, as we consider larger and more complex objects, there must come a point at which we are no longer justified in considering the wave nature of an object. At that point, we are back in our familiar non-quantum world, with the physics of earlier chapters of this book. In short, an electron is a matter wave and can undergo interference with itself, but a cat is not a matter wave and cannot undergo interference with itself (which must be a relief to cats)."

*snicker, snicker* I think Walker must have written that line.
lovely, meow meow,... back to my contemplation of tuna in QED.