Young designer’s vision for underground Lower East Side green space inverts spatio-economic dogma. Science fiction teaches us that the mutant proles live on the surface and underground while the future-chic kleptocrats inhale flavored air in low orbit highrises. But the presence of curated and controlled parkspace below street level puts smart money and high property values underground. Now we can look forward to playboy sons of asteroid mining magnates driving their drill cars through our houses’ foundations.