image I include here a comment on this issue I received from John Baez: ``I believe there is a deep reason why area is more fundamental than length in loop quantum gravity. One way to say it is that the basic field is not the tetrad e but the 2-form image . Another way to say it is that the loop representation is based on the theory of quantized angular momentum. Angular momentum is not a vector but a bivector, so it corresponds not to an arrow but to an oriented area element.'' On this, see Baez's [33]. On the relation between E field and area see in particular [170].