Second, he makes more readily available some common item which previously had been more difficult or more expensive to obtain for his customers, thus easing one, if only minor, aspect of their lives.

But the real puzzle here was not the existence of these two bubbles but the fact that the first burst with minor consequences while the second provoked a financial bloodbath.

The result is an array where the first key is the name of the master rule and the second key is the position-0 (major) or 1 (minor).