From Mr Max Keiser.

Sir, Martin Wolf makes a good case for reforming capitalism ("Risks and rewards of today's unshackled global finance", June 27) but fails to address the key problem underlying the various inequalities and distortions he describes. Transparency used to be the hallmark of market economics. Buyers and sellers had confidence in the "invisible hand" of multiple self-interested parties seeking maximum utility for themselves - and, in so doing, inadvertently contributing to fair prices.