  We review and compare the integrable structures in N=4 gauge theory and
string theory on AdS5xS5. Recently, Bethe ansaetze for gauge theory/weak
coupling and string theory/strong coupling were proposed to describe scaling
dimensions in the su(2) subsector. Here we investigate the Bethe equations for
quantum string theory, naively extrapolated to weak coupling. Excitingly, we
find a spin chain Hamiltonian similar, but not equal, to the gauge theory
dilatation operator.
