In Essence, One Accessory Acting “According to the Principle of a Cactus” is alread a passon for Many Hundreds of Years: this is an umbrella; This also includes the similar Structure of the Tent and Tents. BUT What IF THIS Principle Isferred to the Creation of Ordinary Buildings — Residential, Industrial Or Office? Thinking: A Small Apartment Is Easy To Warm, Its Easier to Keep It Clean. If the Family Is Added, The You Can Simply Push The Frame and Put Partitions, and New Rooms Are Ready. The Semicircular Shape of the Building Is Better Suited For Organizing Natural Lighting and Ventilation than Traditional.