Rails - Mar 2006 - Verification: Module methods being called from controller

If I call module methods from a controller by "requiring my module
into"
my controller (note that I am not doing a mixin), then it appears that I 
have to define the module methods as class methods, e.g.

def self.xyz

in order to access them via the module name.

Why is this necessary if a module isn''t a class?

It''s a little confusing because in the Pickaxe book, it looks like you 
can just define module methods with

def xyz

and then access them via ModuleName.xyz.

Is Rails adding a restriction here or am I misunderstanding something 
fundamental?

Thanks,
Wes

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