Makerbot

​Makerbot is a type of 3D printer brand.  With this printer you can build 3D models of cities and even a globe of the world.  I feel this is a good way to advance because we can have 3D models of houses and cities.  Also, it will help be an inexpensive way to make artificial limbs for people.  However, there is a down side to this technology.  People can make hand held weapons, such as guns, in their homes and start selling them.  All in this entire product can be used to better or worse mankind.  We have to remember that it is not the technology causing the problem; it is the person operating it.