Alright, maybe if any of you can give me an example of something other than RuneScape where ghosts appear in, where you need a stupid amulet to talk to ghosts, I might take your word for it.
But so far all of you have just said "It's fictional so it doesn't matter."
At no point did I ever claim that ghosts are real. I am comparing these with ghosts that appear in other form of media.
And for the record fantasy creatures NEED rules to be considered the proper one. Why do you think the Twilight movies are hated so much?
They do need rules but they make their OWN rules.
Twilight is not hated because their creatures differ from the traditional vamps or werewolves, they are hated because they are poorly written with a car crash of a plot with no real depth to it.
It makes perfect sense that we cannot understand ghosts without a magical aid in Gielinor because Gielinor is a fantasy world and ghosts are a fantasy being and they decided we need a magic to understand them.
Plus in terms of talking to ghosts the real world itself is the prime example of not being able to directly understand them - we rely on ouija boards and seances and mediums and almost no real world supposed ghost-lore actually has them talking.
As for why they differ from living species, its simple - they are dead, living species are not. One can easily assume all living species on Gielinor are using a 'common tongue' (pretty standard fantasy trope) where by they all use one globally known language to allow us to communicate with them all. It's even something that is alluded to with the Gnomish and Elvish languages seen in written texts. Plus its not like they do all speak plain and simple english - the less civilised species like goblins and ogres speech is very disjointed and basic compared to say the higher species like gnomes and elves.
Alright, your arguments make a lot of sense, and I approve.
I still find it stupid, but you still have great counter-arguments, I will admit that.