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The final inspiration for wrote this essays come from the popular column “Deadalus” by David Jones in Nature , this essays are wrote in the same spirit . It’s interesting according to a cite from the book “The Further Inventions of Deadalus”: “some 21% of Deadalus’s schemes make some sort of contact with the real word sooner or later” David Jones obviously do not implement any idea, he only suggest, the “dirty work” is delegated. This is a very good strategy, specially for not very practical persons such myself. Without more, the essays: Digitalizing material ( 8 pages , all ) . The techniques of “Layered Manufacturing Technology” (LMT) promise to produce versatile machines, but at the moment any of this techniques can "close the loop", that is build itself. A preprocess to produce “cubes” of agglomerates of different materials is proposed, in essence "digitalize” material, with that is possible to simplify process of manipulation of materials, similar to the use in electronics where the use of digital signals simplify electronics designs. Extra material: Appendix ( 3 pages , all) . Design of a prototipe Other designs with 3D images ( 3 pages) . Requires VRML-2 plug-in Techniques for making cubes (in preparation) First practical results (in preparation) Cubes part II (in preparation) . After exploring the possibilities of building objects with cubes in a top-down approach, the inverse approach is explored, using “smart” cubes. Personal Monorail ( 10 pages , all ) . A public but personal way of transportation is proposed, using ‘transport capsules’ able to be connected to several propulsion systems. This way is possible to combine several means of transportation (vertical, horizontal, suspended, surface or underground) during the same trip. The main form of transportation to be the monorail, because is the least harmful to the environment. NOTE: after I wrote the first version of this essay, I read in the January 2000 issue of Scientific American of a group with similar ideas but using the “Indutrack” technique of magnetic levitation, the SkyTRAN @Agora (in preparation) . The Internet after been developed principally in USA, is marketed as a business and entertainment media , but the big impact can be the development of a authentic democracy, that is a direct democracy . Making sugar (in preparation) . This moment the planet is enduring the sixth massive die out in history , part of the fault fall in the low efficiency of the food production techniques, agriculture and principally livestock production, is time to propose a radical improvement.