Very Mysterious...

I've been studying the markets for a long time and there is a fascinating phenomenon which occurs that I still don't completely understand. A perfect example of this happened in the Russell 2000 Index a few days ago.  About month ago I originally drew the Black Uptrend Line that you see here.  I understand the dynamics that cause trends to happens so that isn't the issue.

What is mysterious to me is how on Tuesday the high trade was exactly at the bottom of the trend line.  How can this be?  You may think this is just a coincidence, but I do not.  I've seen this occur hundreds of times over the years.  Why does it happen? To be perfectly honest I really don't know.  But if you stop and pause and really think about it, it is very mysterious and fascinating phenomenon.