The problem is that sometimes we don't know where we are on this line. When we all think this is a good time to buy, it may be at a dangerous mountaintop, because only the next day, we will know What will happen.
We look at what happened in the past with our current eyes. This is clear at a glance, but who can predict the future?
its hard to read a chart in market and sometime we misunderstood the line in the chart. I also experience some problem with the line and because of that it lead some losses of my money. I usually my bitcoin in a dip price and then I will sell it out when the price increase and I will wait for another dip.