You deal with this every time you wake up, or visit a specialist of any kind. You likely didn't make your own clothes, you didn't grow your own food, dam up any rivers for your water supply, build any power plants to power up your phone/computer, nor did you spend any of the deep amount of focus required to build up the knowledge and technology required to provide us these 'things' in life. The only difference is, you didn't pay much attention to these facts because they became mundane. Take any of them away for any decent amount of time, and suddenly you become acutely aware of what it is you have.

The author mentioned what the issue is: a lot of people are experiencing what it's like to 'catch up' to the more intelligent ideas. Everyone can 'get' the intelligent ideas given enough time. But how much time do you have? And he's concerned someone will rush and create some kind of world-ending solution because they're too trusting of a technology they don't understand.

His only solution is some kind of throttle on the advancement of technology, and arguably knowledge (whose?).