3-d printing reflection

In the video that Mr Cornell showed us it showed us the future that can help a lot or hurt a lot. It showed that you can make food with a 3d printer which is very helpful. But, it also talked about how you can make gun parts and that would be bad if many people got the idea for that. Also in the video it say that we can make body parts for patients that need a transplant. It also showed a retail shop that sells that is very popular that sells 3-d printers for 2200 $ and it shows that you can sell the things that you print on the internet. So this is the future of printing and will effect everybody once they find out