I was kind of hoping he would go on to speculate on what those breakthroughs might be, but the article doesn't go into any more detail. If someone like him does

I was kind of hoping he would go on to speculate on what those breakthroughs might be, but the article doesn't go into any more detail. If someone like him doesn't have some next steps in mind, that doesn't bode well for AGI happening any time soon.