Luca Pacioli and Leonardo DaVinci --Renaissance sexuality-- were both mathematical geniuses. Leonardo was fresh apt towards military engineering, duration Luca towards rob and pure math. When Pacioli included "Double Entry Bookkeeping" in his textbook, Summa de Aritmetica, which he published in 1494, little did he know he would change the world. BusinessGay Couples:Leonardo DaVinci and a monk named Luca Pacioli--the inventor of Accounting (debits and credits), lived together for manifold second childhood. Luca's math textbook contained the basic...