Traces the history of gunpowder, discussing fighting and warfare before the invention of gunpowder, how the invention of gunpowder changed warfare, and the ethical questions it has raised.

Discusses the effects of the development of the Internet on the economy, society, and everyday life.

Discusses the effects of the invention of the personal computer on society and everyday life.

Discusses the effects of the invention of the printing press on language, religion, science, society, and everyday life.

Discusses the effects of the invention of the repeating rifle, which did not require that the shooter be a marksman, on warfare, crime, and society.

Discusses how the invention of the steam engine transformed society specifically and how it advanced technology in general.