The study published here proposes that individualistic actions on behalf of people prevent a larger group of people from greater fluctations.
One thing is always true, the more individualistic the behaviour of those involved in the market is, the more stable the whole system becomes.
The compare youth hostel showers to equity markets (or any scarce resource), and try to prove that the greater stability can be achieved by a group of people working for their own good. Funny logic, but I would tend to agree. What do you think?