Before finishing this chapter, we need to understand one extremely vital concept when it comes to iteration statements: infinite loops. These are exactly what they sound like: when a loop's conditions make it impossible for it to stop running and move on in the program. Infinite loops usually happen in for and while loops when the iterator is not increased or decreased; if the playerLives line of code was left out of the while loop example, Unity would freeze and/or crash, recognizing that playerLives would always be 3 and execute the loop forever.
Iterators are not the only culprits to be aware of; setting conditions in a for loop that will never fail, or evaluate to false, can also cause infinite loops. In the party members example, from the Looping through key-value pairs section, if we had set the for loop condition to i < 0 instead of i < questPartyMembers.Count, i would always be less than 0, looping until Unity crashed.
