Tong's key point in December's 2012 Scientific American is that chiral fermions needed for the weak force cannot be computed in lattice gauge theory.
This seems an odd claim unless Wilzcek's QCD for strong gluon-quark force is not at all able to deal with the weak force?
So that would mean the quarks in QCD are not chiral?
Will some expert please pipe in on this?

A Computable Universe" is now available in Kindle edition:

    http://www.amazon.com/dp/B009WG4C34

Also, coming next week, Nassim Nicholas Taleb's "Antifragile":
    http://www.amazon.com/dp/1400067820

See also

    http://www.fourmilab.ch/fourmilog/archives/2011-02/001290.html

    http://www.fourmilab.ch/fourmilog/archives/2009-01/001103.html