Gelf Magazine points out the similarities between a recent New Yorker comic and an old Far Side:
The artist of the more recent cartoon is Lee Lorenz, a 74-year-old former art editor of The New Yorker with several books of illustrations to his credit. Bob Mankoff, the magazine’s cartoon editor, tells Gelf that he is sure that Lorenz did not borrow inspiration from Gary Larson’s comic. “They are very similar,” he says, “but I can guarantee you that Lee Lorenz is not a guy who copies cartoons.”
Mankoff explains that the sheer volume of cartoons produced by artists means that there is often overlap of ideas. “Often in the same week different cartoonists will independently come up with identical ideas,” he says. “Other times cartoonists generate ideas that have been previously published in the magazine. This is not plagiarism; rather it is the result of very creative people developing many ideas from a few well-established, well-traveled cartoon settings.”
Gelf has both strips posted on their site; go see for yourself.