Before the mirror was invented, we had only glimpsed our blurry reflections in water. It wasn’t until the development of the high-quality silvered glass mirror in the 15th century that we have actually seen ourselves.
I find the mirror to be one of the most significant inventions of humankind, because it not just led to the concept of individual identity but also marked a crucial psychological, philosophical as well as social shifts that changed civilization for once and for all!