There are three commonly held truths about mahjong:
+ Mahjong is a system that allows the user to bend or alter reality, conferring various supernatural abilities that defy physics as we know it.
+ Mahjong is an unlimited energy.
+ Mahjong is something that is not yet fully understood.
Thus, conventional wisdom says.
Conventional wisdom is frequently wrong.
An excerpt from Higher Mahjong by Sukoya Kokaji