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Why can't Half-Orcs be Monks?
Browsing around through the Forgotten realm wikia there's some interesting information around various classes and races. Wizard Slayers and Totem "Druids" are associated with Barbarians.
Rangers are prevalent among Elves, some are humans, half-elves, yet some are of the Half-Orc variety particularly those who seek to escape the prejudices of society.
Now as with Rangers Half-Orcs are known to be among the ranks of Monks with the Shadow dancer archetype being associated with the Monk class. If Half-Orc can be Shadow Dancing Ninja assailants why are they restricted from the standard Monk class seeing as how they have so little going for them class and race wise in-game? Their 19Str can be replicated through items and potions early in the series & their Constitution max is shared by Dwarves who are arguably better with their shorty save bonuses.