Jillian Steinhauer, writing for HyperAllergic:
You may recall that last month, when actor Leonard Nimoy died, Canadians went into a frenzy “spocking” their $5 bills — aka drawing on the banknotes in order to turn former Canadian prime minister Wilfrid Laurier into Spock. When I was editing our story about the phenomenon, I discovered something curious: you can’t Photoshop money.
Fascinating.