  Motivated by recent claims of a proof that the length scale exponent for the
end-to-end distance scaling of self-avoiding walks is precisely
$7/12=0.5833...$, we present results of large-scale simulations of
self-avoiding walks and self-avoiding trails with repulsive contact
interactions on the hypercubic lattice. We find no evidence to support this
claim; our estimate $\nu=0.5874(2)$ is in accord with the best previous results
from simulations.
