The (scientific) world swings again (??)

I think that if Leibniz was alive today he would be certainly reading this paper:

http://arxiv.org/abs/math.DG/0412316

Look to this beautiful simple idea: S^6 is contained on the imaginary octonions and then he somehow evades the old non-integrability stuff.

Questions:

1) Exotic diphemorphism in S^6 are expressed with the use of quaternionic exponential, a function is defintely ruled by the Class II. What is the relationship between this complex estructrure and the exotic diphemorphisms? I guess there is something here having to do with the riemann manifold that result as the analytical continuation of the Class II. The dimension is also 6.

2) Why Ed Witten wouldn't answer my emails about his paper?:

http://arxiv.org/abs/hep-th/0504078

named: Two-Dimensional Models With (0,2) Supersymmetry: Perturbative Aspects

In my case the perturbation comes after his silence. What do people have email for? Can't they just have courtesy and say: "I am busy, sorry" or "I don't care/ I am not interested" or "your mirror operator and my mirror operator are very alike, maybe there is some sort of bridge here". I am afraid this smoke signal of blogging will supercede private non-communication.