There are games that are updated online (for example Gran Turismo 5).
This cause that some questions and answers are valid in a period of time, but when a new patch is released they become wrong (or not the best answer).
There is a question for Gran Turismo 5:
What is the best way to earn money?
For the firsts versions of Gran Turismo 5, the answers were correct (Do the "Like the Wind Event"), but after the patch 1.13, the best way is doing the "Seasonals Events".
What can we do?