  We conjecture explicit evolution formulas for Khovanov polynomials for
pretzel knots in some regions in the windings space. Our description is
exhaustive for genera 1 and 2. As previously observed, evolution at T != -1 is
not fully smooth: it switches abruptly at the boundaries between different
regions. We reveal that this happens also at the boundary between thin and
thick knots, moreover, the thick-knot domain is further stratified. For thin
knots evolution is governed by the standard T-deformation lambda of the
eigenvalues of the R-matrix. Emerging in the thick knots regions are additional
Lyapunov exponents, which are multiples of the naive ones. Such frequency
doubling is typical for non-linear dynamics, and our observation can signal
about a hidden non-linearity of superpolynomial evolution. Since evolution with
eigenvalues lambda^2, ..., lambda^g is "faster" than the one with lambda in the
thin-knot region, we name it "nimble.
