Apparently, the giant purple ‘5′ is to “Make it more distinguishable from other bills at a glance.”

What, the already sizable ‘5′ or the HUMONGOUS PICTURE OF ABRAHAM LINCOLN on the FRONT of the bill isn’t a dead giveaway?
Seriously, if you need more help than that, you shouldn’t be leaving the house. Not without a helmet anyway. And don’t give me crap about being blind. If you’re blind, you wouldn’t see the ‘5′ if it folded out like a road map.
Maybe they figure since Canadian money is worth more, our money need to look more like theirs.