Feinberg owned a cigar store in a poor neighborhood of Philadelphia. He sold cans of Sterno, which contains about 4 percent alcohol, to people in the neighborhood who mixed it with water and drank it to become intoxicated. After conducting this business for some time, Feinberg purchased a quantity of Institutional Sterno. It contained 54 percent alcohol. The cans were marked “Danger—Poison,” and had a picture of a skull and crossbones; Feinberg did not warn customers of the difference. As a result, 33 people died from alcohol poisoning. Did Feinberg commit a crime? (Commonwealth v. Feinberg, 234 A.2d 913, Pa.)