Here you can see a weekly chart of Eur & Usd showing a tool in this date at the level of 1 usd.
The close price is expressed by a (48 bars/weeks and a offset of 12 bars/weeks)
As you can see, the division lines 1/8 and 1/2 of Tool perfectly match that the trends marked as that average.
surprising coincidence or something else?
The question can be ...
What does happened during the first half of October-2007 ?