[mavelikara]

> For example, I'm working on a scheduling app right now. In real life, a schedule is an abstract concept realized on paper. Our app certainly doesn't have a Paper class.

I am hoping that your application has a function for UnscheduledWorld -> ScheduledWorld.

> I would encourage any OO zealots to give FP a honest try.

Why assume that people who like OO more than FP do so only because they haven't tried FP? Isn't it possible that you are in the honeymoon stage with FP, and as you gain more experience with it (like you have with OO), "the scales will fall off your eyes" as P G Wodehouse would have put it?