When you put all things into a blackbox and pray for the promising result, the whole methodology goes to a dead end because it's not revealing the truth but voodoo magic to self-cheating. Nowadays, people just put big data into a blackbox to make "AI". We need the AI system to tell us why, not how. Or it's not AI to help you, you made yourself a Lord to give you order. And you never have chance to ask it why.

Symbolic AI could be a chance, because it keeps necessary meta info to reveal reasonable things. But how to optimize it properly will be a problem.