Take bar 3 for example. Obviously it's easy to see now that prices above 60 were rejected. However in general how far do you let price move? Until the ticker rejects a price we do not know what is going to happen. So once the ticker gets to 60 and it doesn't reject then what. How much room do we give it? What if price gets to 70 before a rejection?
Bar 6 for example as well. We have moved up from 30 to 50 and in one bar moved up over 10 points. Seeing what happens next makes it easier to say one thing or the other but in real time how do you let price come back 20 points. Is it the given amount of time in that move up that causes you to say ok we are moving up but not as fast as down at the moment? Are we thinking price rejected up from 50 so now we give price room even if it's 20 points to see if there is any more interest in prices above 50 since the previous rejection in bar 2?
Replay it and watch the right tick.
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