Two interesting, unrelated, yet similar things-probably because they happened within moments of each other:
One, from an audiobook I listened to called "The End of Overeating" by David A. Kessler. The reason food manufacturers use several different kinds of sugars in one product (cane syrup, dextrose, high fructose corn syrup, honey, etc.) is so they can use A LOT of sugar. It often would be the main ingredient if listed by weight in the nutritional panel. But because they are using a variety of sugars the ingredients are listed separately and it doesn't appear that sugar is a main ingredient. Same thing for a variety of oils. Excellent book by the way.
Second is a tip learned from watching Elizabeth Zimmerman's Knitting Workshop on DVD. The original benefit of patterned sweaters (gloves, hats, etc.) where two or more colored yarns are used to create a repetitive motif, was to make the garment double thick. Brilliant! By creating a design that uses more yarn, the knitter is able to make the garment thicker and warmer for the wearer. The unused yarns are carried behind the working yarn, creating another layer.