Naming a trend without guessing at it
Trend is a description of bars that have already printed. Most of the confusion comes from treating a description as a forecast.
The standard definition is old and still the clearest: an uptrend is a sequence of higher highs and higher lows, a downtrend is lower highs and lower lows, and anything else is neither.
It has one virtue that most alternatives lack. It is checkable. You can look at a chart and determine whether the condition holds without interpretation.
The setting hiding inside it
Higher highs and higher lows requires knowing which highs and lows count. Every bar has a high. Most of them are noise.
So you need a swing definition — a minimum size or a minimum number of bars either side before a turning point counts. And that threshold determines the answer:
- A small threshold finds many swings, so trends look short and reverse constantly
- A large threshold finds few, so trends look long and persistent
Neither is correct. But two people can look at the same chart and disagree about whether there is a trend, and be using the same definition. The disagreement is about the threshold, and it is worth naming when it happens.
This is also why swing-based markers frequently repaint. If a high counts only once three bars have printed to its right, it cannot be marked in real time. The chart will show it on the correct bar afterwards, which is not where it appeared live.
Timeframe changes the answer
An instrument can be trending up on a daily chart, ranging on an hourly chart, and trending down on a five-minute chart, all at the same moment, with no contradiction. These are three different questions about three different spans of activity.
Most arguments about whether something is trending are two people answering different questions without saying which.
The step that is not in the definition
Identifying a trend is a description. It says the last several swings went a particular way.
The move from this has been trending to this will continue trending is an inference, and it is not contained in the observation. Trends continue until they do not, and by construction the definition confirms one only after several swings have already happened.
That is not an argument against using it. It is an argument for being clear about which part is the measurement and which part is your judgement, because only one of them is on the chart.
What it is good for
Consistency. Applying one definition across every instrument you look at means your description of conditions does not drift with your mood, your position, or what you would prefer to be true. That is a real benefit and it is the modest, honest version of the claim.