The Book of Heaven

The eyeball printing technology mentioned in the book reminds me of the development of 3D printing in reality. Maybe one day we can actually print our own organs. Just like when my boyfriend and I were passionately in love, I felt that there were stars and sea in his eyes. If we had such technology, would we be able to preserve this beauty forever? However, technology is also a double-edged sword. As the book says, it may bring unexpected risks. This book gave me a lot to think about and is well worth reading!