Can you tell me about how the technology evolved
"You are curious, I see! Curiosity is one of the core values of the Book of Whys."
"The technology evolved from the first true cure from cancer. Initially it was about printing organs for people whose organs had cancer. Livers, and pancreas could be printed and then transplanted in the patient."
"But the real progress happened from the artificial intelligence research. Initially, research was focused on increasing the computing power by increasing the number of bits - more pieces of metals and plastic. But it became apparent that if a sentient artificial intelligence were to be created, it had to replicated the only thing that we knew to be sentient - life."
"Being sentient is more than computing power - which is just one dimensional. Sentient beings have emotions, pathways that cannot be represented by ones and zeroes. Sentience requires an actual brain. It is the artificial intelligence research that pushed the understanding of the human brain, and more importantly, the printing of it."
"The human brain was the last organ remaining that couldn't be printed, but now that it could, it unlocked the rebirth process. Now, instead of printing an organ and transplanting it in the parent, you could reprint the patient, and discard the original one."
"Healthcare was the first application, but new applications quickly came about. The first one was for rebirth - providing a life and death. People could have a full body scan done, and pay for a service to be reborn from that point after their death."
"The second and less obvious one was for quick and efficient transportation. Instead of transporting your whole body, you could get a full body scan, be discarded, and then get reborn far away as information can move much faster and at a lower cost. A trip from one side of the planet to another became a matter of uploading and downloading from a cloud."