Without lignin, there would be no woody plants, no wood, no coal, no charcoal, no fire, no pottery, and certainly no iron or metallurgy.
If the conductivity of copper were ten times less, wires would have to be ten times the cross-sectional area to provide the same conductivity.
All these elements of fitness in nature for the development of technology, crucial to mankind’s rise to civilization, long preceded man’s arrival on Earth.
The combustion of wood or coal may seem so familiar as to be unworthy of any comment.
The importance of metals, particularly iron, and the importance of the discovery of metallurgy can hardly be exaggerated.