Summarize this article in one sentence.
If you’re building a Rube Goldberg machine for a class or official competition, you will get a packet of information and rules. Before you plan or build your machine, read through this material carefully. While you read, identify the goal, requirements, and restrictions.  If the material is unclear, ask your teacher, parent, or an official to clarify. If you don’t follow the rules, you may get a poor grade or be disqualified from the competition. Rube Goldberg machines are complex structures that rely on chain reactions to execute one simple task. Before you design your machine, determine what you want the machine to do. If you are competing in a Rube Goldberg competition or completing an assignment for school, you may not have the freedom to choose this task. If can pick, consider some of the following options:  Open or close a door Turn on a light Turn off an alarm Pour a bowl of cereal Turn on a faucet Developing a zany, complex machine is not an easy task. Before you create your own Rube Goldberg machine, you may find it helpful to see some examples. While you should use these examples as a source of inspiration and direction, do not copy someone else’s machine. Instead of replicating these machines, make it your goal to improve, alter, or modernize them. Potential sources of inspiration include:  Rube Goldberg’s original cartoons  Rube Goldberg Competition submissions YouTube videos of functioning Rube Goldberg machines

Summary:
Understand the rules. Select a basic task for your machine to accomplish. Look for inspiration.