Wealthiness doesn´t trickle down – it trickles up

Why the super rich are inevitable by Alvin Chang explains the Yard-sale model and why it leads to rich people becoming richer and poor people becoming poorer. The Yard-sale model reveals an underlying physical law-like pattern of wealth always trickling up, and not down. In the article, it´s explained with several simulations which you can trigger to visualize wealth distribution.