Hier is my reaction
According to this presentation, we breed several billions of domestic animals to death, and make a product is crazy. If population will increase in the future, the need of the domestic animal is necessary more, too. Serious load depends on the earth to maintain several thousand domestic animals. Then environment and public sanitation and food safety become in danger. So we arrive at making a product derived from animals such as leather or the meat without killing an animal. We make the cell of the animal like to make the organ of the person with 3D printer. And to make some product by 3D printer has many Succeed example.
Based on presentation I think that to use 3D printer and not killing animals is good way. I have three opinions why I think it is good way.
First, we can stop that to do a cruel thing. I thought that it is natural to eat meat. So I did not regard that to eat meat is to killing animals. I noticed that it was very cruel for animals and I became afraid of if people are murdered and eaten in the same way as an animal. We should be able to eat meat without killing animals.
Second, to use 3D printer is good for environment. The domestic animal is one of the causes of the global warming. Because they are region and the fresh water the best of user in the world. If to use 3D printer, it is not need region and the fresh water. And 3D printer can make it as much as it is necessary. If killing animals and to make product or meat, there are part to abandon unnecessary. If we use 3D printer, some wastes disappears.
Third, there are many cultural success examples with the 3D printer. We succeed in making a body tissue of the complicated structure in a medical field, and the transplant to a patient also succeeds. Because it is used in medicine, the safety of the 3D printer is high. It is the technique that is humanitarian, and can feel relieved.
In conclusion, I pretty much agree with making a product derived from without killing animals. This is very good way for animals, environmental, earth and us. So I think that the technique such as the 3D printer should develop more.
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