[Rails] Class, Module, Object

>> reload!
Reloading...
=> true
>> puts Class < Module
true
=> nil
>> puts Module < Class
false
=> nil
>> puts Module < Object
true
=> nil
>> puts Object < Module
false
=> nil
>> Object.parent
=> Object

The above indicates that the Class object instance inherits from the
Module object instance and the Module object instance inherits from
Object. And Object doesn't inherit from anything.

So why do these return true:

>> Module.is_a?(Class)
=> true
>> Object.is_a?(Module)
=> true

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