urer ▁in ▁Environment al ▁Psych ology ▁at ▁University ▁of ▁Tas mania , ▁in ▁ 1 9 7 8 . ▁The ▁word ▁perm ac ulture ▁originally ▁referred ▁to ▁" per man ent ▁agricult ure ", ▁but ▁was ▁expanded ▁to ▁stand ▁also ▁for ▁" per man ent ▁culture ", ▁as ▁it ▁was ▁understood ▁that ▁social ▁aspects ▁were ▁integral ▁to ▁a ▁truly ▁sust ain able ▁system ▁as ▁inspired ▁by ▁Mas an ob u ▁Fu ku oka ’ s ▁natural ▁far ming ▁philosophy . ▁Reg ener ative ▁design ▁is ▁integral ▁to ▁perm ac ulture ▁design . ▁ ▁In ▁ 1 9 7 4 ▁David ▁Hol m gren ▁and ▁Bill ▁M oll ison ▁first ▁started ▁working ▁together ▁to ▁develop ▁the ▁theory ▁and ▁practice ▁of ▁perm ac ulture . ▁They ▁met ▁when ▁M oll ison ▁spoke ▁at ▁a ▁sem inar ▁at ▁the ▁Department ▁of ▁Environment al ▁Design ▁and ▁began ▁to ▁work ▁together . ▁During ▁their ▁first ▁three ▁years ▁together ▁M oll ison ▁worked ▁at ▁applying ▁their ▁ideas , ▁and ▁Hol m gren ▁wrote ▁the ▁manuscript ▁for ▁what ▁would ▁become ▁Perm ac ulture ▁One : ▁a ▁per enn ial ▁agricult ural ▁system ▁for ▁human ▁settlement s ▁as ▁he ▁completed ▁his ▁Environment al ▁Design ▁studies , ▁and ▁submitted ▁it ▁as ▁the ▁major ▁reference ▁for ▁his ▁th esis . ▁He ▁then ▁handed ▁the ▁manuscript ▁to ▁M oll ison ▁for ▁editing ▁and ▁add itions , ▁before ▁it ▁was ▁published ▁in ▁ 1 9 7 8 . ▁ ▁Reg ener ative ▁organ ic ▁agricult ure ▁ ▁Robert ▁Rod ale , ▁son ▁of ▁American ▁organ