If one thing makes you think of another thing, you form a connection between them in your mind. The more connections you have, the better access you have to cross-connections. The more things something can remind you of, the more you know about it, or are learning about it.
"The fox knows many things, but the hedgehog knows one big thing." Isaiah Berlin
Ground Covers: "Nature used ground covers as earth carpets long before man conceived the idea of using evergreen vines and low growing shrubs as labor saving devices. Today’s way of life has brought an even greater demand for ground cover plants and more emphasis is placed on their esthetic qualities as well as the functions they serve."
"To me a lush carpet of pine needles or spongy grass is more welcome than the most luxurious Persian rug" Helen Keller