Comment by vdondeti

What I stated above was an interpretation of the statement you cited. In essence, I (and many others) would posit that if you can't measure it, then you can never know it exists. So, the smallest length any object can have is the Planck length. And then I believe, that since you can't measure sub Planck lengths, everything you measure must be an integral number of Planck lengths. Obviously, one is free to disagree with this interpretation.