You’ll learn
- About the surprising origins of glass and mirrors
- Why ice changed the modern world
- How ancient caves influenced the telephone
- About the link between sewers and subways
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first KEY POINT
New things are being invented all the time. We don’t hear about many of them because they don’t have a significant impact on our lives, at least not yet. However, some of the world’s most prominent and relevant inventions came from small and humble beginnings, and many have become so ingrained in our lives that we take them for granted.Steven Johnson had a deep interest in science and technology, and as such, he researched the hidden depths of some of the world’s most influential inventions. We’re talking about mirrors, telescopes, telephones, air conditioning, and lights.These are things we all use in our daily lives. We don’t really pay too much attention to them, but we've come to need them! Steven Johnson also found that many of these life-changing inventions came to be from different problems altogether — mirrors came from glass-embellished jewelry and telephones from echoes in a cave. These inventions have dramatically affected the evolution of human life.
Therefore, trying to solve one problem leads to not only answering that issue but also solving several others along the way. Most of the inventions we know now never intended to be as well-rounded as they are. They developed over time and created a complete solution for a problem as it evolved. After all, one small action usually affects another. This knock-on effect leads to new ways to live and, in nature, new methods for species to survive.Inventions are rarely products of single-minded inspiration. They’re born out of hard work, perseverance, and many hurdles along the way.Throughout this summary, you will learn about some of the world’s most life-changing inventions and where they came from. The results might surprise you and could even push you towards being more grateful for their existence in your life. If nothing else, maybe it will inspire you to start thinking of your own potential inventions. Who knows, you might be the next big name to come up with something amazing!
second KEY POINT
Do you ever wonder where your mirror came from? Or the glass in your window? To trace back to its earliest origins, we need to take a trip to the very edge of the Sahara Desert, to Libya, to be exact. We also need to go back in time, approximately 26 million years ago.Glass is just glass, right? Well, no. Glass doesn’t just give you something to look through to the outside when you’re relaxing on your couch. Glass developed into jewelry, mirrors, and telescopes. Glass allows us to see ourselves and take selfies! It also allows us to see into space and have many beautiful decorative items in our homes. You probably didn’t realize how multipurpose glass is!Now, back to that desert.At some point, there was a spike in temperature, and nobody was really sure why. The chemical compounds within the individual grains of sand changed and became solid. This didn’t just happen to one grain of sand; it happened to the entire section of the desert. Many thousands of years later, an explorer found this solidified portion of the desert and decided to take a piece back home.

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