* Learned methods can be called with parameters inside () or not
* Learned sometimes you need parenthesis to make the syntax clear
* Learned ArgumentError is thrown if there are not the correct number of parameters

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* Learned how to have default values for parameters
* Learned that variable length parameters are stored as Array type
* Learned how to return from a method with explicit and implicit values

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* Learned when calling method inside same class no class name is needed
* Learned you can use self to name the current class
* Learned you can call private methods from within class
* Learned you cannot call private methods from outside of class
*   and this includes using self to name the current class
* Learned this will raise NoMethodError

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* Learned when calling methods in other classes you need to specify the class name
* Learned you cannot call private methods in other classes

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