"failures" or "errors" are like GEMS and they are the most precious things in the learning process or upgrading your skills and knowledge. While many looks at these NEGATIVELY, I see them positively. Without mistakes and errors, we can fall into the over-confident mind trap. We become complacent. We don't see the need and desire to learn or try to understand if things can go wrong.
How about charts? Let open the statement by saying that the chart has NEVER fail. It is the failure of the user to interpret the chart correctly and properly that results in failure. Unfortunately human will deflect and shift the blame to the chart!!! Unless your chart system has the AI ability to read out the analysis and interpretation plus recommendations, it is the USER himself or herself that analyze, interpret and decide the next course of actions.
The price chart display what has happened. The user has to decide the next course of action.
The indicators are "normally" tabulated with panel windows either above or below the price chart. Almost all indicators will have either 50 or 0 in the middle of the indicator window.
There are many ways to read, analyze and interpret the indicators. Some of the indicators will have 100 on the upper highest and 0 on the lower lowest. with 50 in the mid-level. Some will have NO upper and lower limit levels but 0 in the middle.
Irrespective of the 2 different type of indicator displays, the key is to about interpretations. There are "standard" analysis per "textbook" and there are many other interpretations not documented and published but personal observations due to some mistakes/errors. This is what I call hands-on experience.
My personal opinion is whatever published materials that we read, at best it is only 50-75% of the truths. The other 25-50% will depends on your ability to observe what are not written and published.
The most important question we should be asking is what are we trying or want to achieve with charts? What are readily available tools and How do we use them to help us achieve our objectives?
What is the "relationship" between the price and the indicators? When are the price and indicators "sync" and when they do not "sync"? What do all this represents?
Are we using the charts to "predict" the future? Or are we using the charts to help us understand the overall market pulse?
The things we can and want to achieve is long list. Forget the numeric and enjoy the chart flexible beauty.
Let your observation lead your imaginations