so you must have had Coke." This argument is  flawed because feeling refreshed can result  

from various sodas, not exclusively Coke. The  supporter is erroneously asserting that the effect  

(feeling refreshed) confirms the cause (drinking  Coke), disregarding other potential explanations. 

Similarly, a Pepsi advocate might argue, "A bold  tasting soda is definitely Pepsi. This soda has  

a bold taste, so it must be Pepsi." This  is a fallacious reasoning because boldness  

in taste can be attributed to many sodas, not  just Pepsi. The Pepsi supporter is mistakenly  

affirming that the effect (bold taste) is a  definitive indicator of the cause (being Pepsi),  

which is an oversimplification of the  possible causes for a bold taste in sodas.