Ed McAvoy (88) and Lynn Hoffman ('nearly 90') are peeking into their paradise garden in Turners Falls. When Lynn and Ed built their little suite in the house belonging to Ed's daughter, they knew they had to have a garden. When I saw it I was reminded that the word paradise originally came from the old Persian word for a walled compound. This small walled garden shows that paradise can exist at any size. There is room for…