This is for a person with no ML background. He is 55 years old, he liked the sequences and I recently managed to convince him that AI risk is serious by recommending a bunch of Lesswrong posts on it, but he still thinks it's astronomically unlikely that AGI is <80 years away.
There are a lot of other people like this, so I think it's valuable to know what the best explainer is, more than just in my case.
AI Timelines: Where the Arguments, and the "Experts," Stand would be my best bet, as well as mukashi's recommendation of playing with ChatGPT / GPT-4.