I was always on Team Plato, not Team Protagoras.
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Team Protagoras proclaimed that "man is the measure of all things". The majority can decide on a whim, or at any given time, what an acceptable moral standard is.
Team Plato believed that there is some kind of enduring standard of virtue we can gain knowledge of through our exercise of human reason.
We had a Discussion about 'Polygamy' on Amazon.
One guy said it wasn't the same for women and men.
Another said what was good for the Goose was good for the Gander.
Then the first guy said 'Men have multiple wives for Children, Women have multiple husbands for Pleasure'.
Hmmmm ... so that was an interesting twist.
Anyway, what does the 'Transcendental Code' say about all of this?