Ex. Q about the crazy effects of complements/substitutes on a wide range of goods:

"Suppose a technological improvement has lowered the cost of manufacturing cell phone batteries. This would lead to an _________in the supply of cell phones, causing the price of cell phones to __________. Because cell phones and landline telephones are _____________, this change in price would cause the demand for landline telephones to _____________. However, cell phones and cell phone applications are _________, so the change in the price of cell phones would ________the demand for cell phone applications."