GDP growth is trending down, and has for years. Considering it's 40 years old I'm more struck by the accuracy than us not seeing the prediction come true in 2025.

Maybe the precise date is off, but the trend is already becoming clear, and effects are accelerating. Developed economies grow in the low single digits, it's not going to take much to eliminate much or all of it.

Edit: Which potentially makes the new normal, whenever it may come, a constant recession. That is going to be... interesting.