Aside from the main theme of what has / hasn't been realised technologically, I also find it a fascinating lesson in how society has changed, that these drawing

Aside from the main theme of what has / hasn't been realised technologically, I also find it a fascinating lesson in how society has changed, that these drawings almost exclusively feature families and extended groups of people engaging with modern inventions together. In contrast, a huge proportion of modern advertising, especially for consumer technology products, depicts an individual interacting alone. It's not just the funny tech predictions, nor just the quaint clothing, that provide for anachronism and sober reflection in this collection.