Just thinking; sure, the ten dollar bill is a really dumb idea. So, for that matter, are all the "anti-counterfieting measures" we've taken that can now prevent people from 1986 from traveling forward in time and spending the counterfiet money they made on a copy machine in a grocery store.
     But as far as Reagan dimes are concerned, since we're years into that state quarter thingie no one cares about anyway, aside from being utterly pointless and a slight expense, I really don't see much problem. No one even looks at small change anymore; if it feels like something not a penny, it goes in the machine which counts the money for you and spits out the twinkie.

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