human and an elf typically resulted in either a human or an elf, much like in Tolkien's world.** Eberron gives a very reasonable explanation to why half-elves are a race, and lays down specific rules for half-elves and their offspring (half-elves breed true, elves and half-elves always have half-elf children, and a half-elf/human pairing has an equal chance of producing a half-elf or human).