Paco Underhill environmental psychology research on this topic was the stores that allow customers to get the products in their hands and then, the more sales from stores that showcase products and may not touch.
People also love paper books and e-books can never replace the book is not perfect.
Although people for various reasons, including travel or lack of access to the books they are forced to use e-books but would like to take the book and throw it sheet.
Heinz Ketchup Company to use a thicker glass to show that offers a quality product.
Similar experiments have shown that when paper money out of pocket and the seller will feel pain when one or more of our purchases with debit cards.
In coastal cities such as direct selling fish are just one of the ways to detect fishing for most people touching and pressing the body of the fish and also fish gills.
Now imagine that the seller does not allow you to explore what would happen?