What was garvey trying to make cole understand when he gave him the cake ingredients in touching spirit bear?

"Garvey was trying to prove a point. He laid out salt, flour, eggs, baking soda, a bottle of water, sugar, butter, and molasses. He had Cole taste them. They tasted bad individually, but yet together the ingredients baked a cake. He tried to make the point that they taste bad on their own but good together. He wants Cole to be a part of something instead of alone.

Source(s): http://www.gradesaver.com/touching-spirit-bear/q-and-a/why-did-garvey-make-cole-eat-all-the-contents-in-the-brown-paper-bag-125682/