OOP also has a way to guarantee that the counter can only be changed by calls from specific parts of the code, it's called encapsulation. For example, the count

OOP also has a way to guarantee that the counter can only be changed by calls from specific parts of the code, it's called encapsulation. For example, the counter could be an object that subscribes to button events, and the counter's value could be a private member variable of that object. What exactly is the win from FP here?