  This review emphasizes the close analogy between hard QCD instanton-induced
chirality violating processes in deep-inelastic scattering and electroweak
instanton-induced baryon plus lepton number (B+L) violating processes in
Quantum Flavor Dynamics (QFD). Recent information about QCD instantons, both
from lattice simulations and from the H1 experiment at HERA, can be used to
learn about the fate of electroweak B+L violation at future high energy
colliders in the hundreds of TeV regime, such as the projected Very Large
Hadron Collider (VLHC). The cross-sections turn out to be unobservably small in
a conservative fiducial kinematical region inferred from the above mentioned
QCD-QFD analogy. An extrapolation - still compatible with lattice results and
HERA - beyond this conservative limit indicates possible observability at VLHC.
