Full Idea
Feynman claims that we should regard space as made up of many tiny pieces, which have positive length, width and depth.
Gist of Idea
We should regard space as made up of many tiny pieces
Source
report of Richard P. Feynman (The Character of Physical Law [1965], p.166) by Edwin D. Mares - A Priori 06.7
Book Reference
Mares,Edwin: 'A Priori' [Acumen 2011], p.96
A Reaction
The idea seems to be these are the minimum bits of space in which something can happen.