Another aspect of terraforming ethics deals with an opposing extreme in this debate. Terraforming could be seen as a potential waste of precious materials, in light of alternative uses. Critics believe that it would constrict the growth potential of humanity by encapsulating the material inside of an astronomical object. Once the surface is terraformed and people have taken residence there, all the interior material is needed to sustain the maximum gravity potential for those inhabitants. If all of the material were utilized to produce space habitation systems, a much greater number of lives would then be supported.