https://www.youtube.com/watch?v=3wMKoSRbGVs
Lenat thought CYC and neural nets could be complementary, with neural nets providing right brain/fast thinking capability, and CYC left brain/slow (analytic/reflective) thinking capability.
It's odd to see Lenat discuss CYC the way he does - as if 40 years on everything was still going well despite it having dropped off the public radar twenty years ago.