Level 5Moving averages
Lag: what the average cannot say
The moving average has one structural flaw, and it comes straight from its definition: it looks backward. The average summarises the last N periods; a sharp change happening today feeds into it fully only days later. This is why an average never shows a turn on time — by the time it does, the turn has already happened.
Using it with this flaw in mind does not make the average worthless — it clarifies its role. An average is a confirming tool, not a leading one: good at verifying that a trend exists and which way it points, poor at catching turns. "Price is above a rising average" is a solid statement of the current state; "the average crossed, the reversal has begun" mistakes a lagging tool for a leading one.
One more caution: stacking five or six averages on a chart does not strengthen the analysis — it recreates the twenty-line mistake of level 3 in moving-average form. One short and one long average cover most readings. What makes an analyst is not the number of tools but knowing each tool's limits.
This content is educational information, not personalised investment advice. The chart examples are illustrative.
A short note
An average is a summary of past closes; today's sharp change feeds into it only over days. That does not make it worthless — it clarifies its role: good at confirming a trend that exists, poor at catching turns. Expecting it to lead is the most expensive misreading of a lagging tool; calling it useless throws the tool away without ever learning it. What the average can and cannot say is station 5's lesson.