The first thing about trading is knowing the levels of the range for a certain item. If the item is gold, or rather monie, the fundamentals would be strong, so we would be looking for long term growth. Then one must use their illusion. They must chart.
This of course is completley and utterly opinionated. The levells are sought by people peeping charts, and then drawing lines across them. People call the art names like "Umbrella" or "cloud".
Formations however tainted by manipulation do turn up from time and time again. How accurate are the patterns? That is for the chartist to decide.