I am not sure if it will help you, but you can look through my article on more philosophical aspects of receivers. The idea is that in kotlin, the function not only have its arguments, but it also has a scope or context, where it is called. You have the same thing in any language that have objects with member functions, but in Kotlin you can detach the function from object and keep the reference to the context in the receiver. The receiver is designed that way in order for internal function logic to be the same when called inside and outside of the object.
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