Dollar hovering at 7 month low

for those paying attention. i have mentioned before that dollar devaluation is a reason the market could move higher than "true" fundamentals indicate. maybe that's happening here as the longs will surely look to tag S&P 1000 (in the coming days/weeks) now that we are in range... why do those round numbers end up being points that seem to always end up getting hit... it's like $100 on a stock - once it gets close it usually touches it.