First of all we need to understand what it is.
In my opinion it is something more than just a level where price changes direction. I think of it as a point where beliefs of a trader get manipulated. Those levels are constructed by big players such as market makers and institutional traders to trick others into placing orders that would be favorable for them.
When such an activity can be observed it can help us in predicting the potential price movements with a higher likelihood. If there would be no price levels there would be no point of interest and therefore no orders placed by traders.
Only two types of price levels exist.
These are horizontal and diagonal levels or better known as trend lines. There is one huge difference between them.
Horizontal price level can only be at a fixed price, and is not subject to change.
However diagonal trend lines don't have that fixed price, it can always change depending on the time of a touch. It means one more variable in the…