Grumbles From The Grave

Knowing Heinlein's background, I'm curious what motivated him to share these personal reflections and criticisms at this point in his life.

Some essays seem ahead of their time, especially regarding technology and societal change. Did these perspectives influence your view on sci-fi today?

Heinlein's wit shines through, but I wonder if some readers find the humor a bit jarring when paired with the more serious topics.