I agree that his conclusion of instability is difficult and will offer the idea that of all the critiques of the stock market, instability is probably the least

I agree that his conclusion of instability is difficult and will offer the idea that of all the critiques of the stock market, instability is probably the least credible. A stock market with round the clock, instantaneous transactions is one of the most efficient markets that exist. Instability would suggest that it frequently allows for inefficient outcomes. A stock market's prices are determined exactly by buyer demand and seller supply. It corrects itself in the event of freak transactions (like the flash crash) and if it doesn't correct itself, that means the supply and demand have changed and the price of stocks nearly instantly reflect those changes.