What are some common mistakes made when writing object oriented Lua programs?
Here are some common mistakes made when writing object-oriented Lua programs:

- Not using objects properly. Objects are a powerful tool for organizing code, but they can be difficult to use correctly. If you don't understand how objects work, you're likely to make mistakes that will make your code difficult to maintain and extend.
- Not using inheritance. Inheritance is a way of reusing code by allowing one object to inherit the properties and methods of another object. If you don't use inheritance, you're likely to end up writing a lot of duplicate code.
- Not using polymorphism. Polymorphism is a way of allowing objects to behave differently depending on their type. If you don't use polymorphism, you're likely to end up with a lot of code that is specific to a particular type of object.
- Not using modules. Modules are a way of organizing code into smaller, more manageable units. If you don't use modules, you're likely to end up with a lot of code that is difficult to understand and maintain.
- Not using tables. Tables are a way of storing data in a way that is similar to an array. If you don't use tables, you're likely to end up with a lot of code that is difficult to read and understand.

These are just a few of the common mistakes that people make when writing object-oriented Lua programs. If you're new to object-oriented programming, it's a good idea to learn about these mistakes so that you can avoid them in your own code.
Are tables in Lua similar to arrays?