[Daniel_Newby]

"Most blurry photos are due to low light and camera shake, ..."

The Lytro camera has a fixed wide-open aperture, so exposure times are kept short.

" Being able to pick the focal point arbitrarily after the photo has been taken is a cool gimmick, but what's the point?"

You can also change the depth of field after the fact. E.g., to blur out the strip club in the background of an otherwise nice shot.