What does this story reveal about Buddhist attitude towards Varna.

The Buddhists also developed an alternative understanding of the social inequalities, and of the institutions required to regulate social conflicts. In a myth found in a text known as the Sutta Pitaka, they suggested that originally human beings did not have fully evolved body forms, nor was the world of plants fully developed. Thus, the Buddhists believed that all the Varnas or sections of the human society were exactly the same or equal and there was no difference amongst the Varnas or sections of the society.