So I'm originally from Canada and pregnancy hormones are probably making me emotional but today I found out US money doesn't have braille on it! All I can think about is that poor blind getting a bunch of ones being told they're ten by a jack ass. For as long as I can remember Canadian money has always had braille on it as a kid I didn't understand the purpose of the bumps until someone explained it but it was there. I'm definitely overly emotional about this but I don't think it would be that big of a coat to add the bumps or even little holes so the blind can be confident in the denominations they are receiving. Sorry for the rant thanks for reading it