From an educational standpoint, it is understandable that supply and demand is taught in a such a way that the increase or decrease in the supply of product A increases or decreases the demand of product B without any further advancement of the topic. It may seem more complicated due to multiple variables, but I believe that people would get a better understanding of supply and demand if they are shown how one individual product can have a seemingly endless effect on a multitude of other products.
Starting with a simple example, this article shows that the increase in the cost of one product decreases its demand and directly affects the supply of another product. The increase in the price of corn has decreased the demand of corn from beef producers. Beef producers have decided that it is not worth the investment in corn, for feed, so they have decreased the number of cows that they raise leading to a decrease in the supply of beef.
The decrease in the supply of beef has led to an increase in beef prices which has steered consumers towards other products, like chicken. This increase in the price of beef has led to an increase in chicken consumption showing that chicken is an inferior good. Meaning that if the price of chicken and beef were the same, based on weight, consumers would prefer beef. The price of corn has begun to stabilize, even decreasing a little, and it will be interesting to see how quickly consumers will see an increase in the supply of beef which will lead to a decrease in the cost of beef. Have consumers gotten comfortable with chicken or will they switch back to beef in droves? This will really tell us whether chicken is an inferior good.