"Burden of Proof"
You're on jury duty ...
"How can we know?" Mrs. McNamera said. "These days, what with robots, clones --"
"Don't forget mind control," Mr. Jackson added.
"-- mind control, and, like, that guy who can make people see stuff that isn't there -- how can we convict? How can we be sure he did it?" The others nodded.
"The standard is a reasonable doubt," Duncan said. "How reasonable is it a mind-controlling super-villain compelled the guy to shoplift a six-pack? Or it was really a clone, an android, a doppelganger from an evil dimension, or aliens? It's a simple shoplifting."
Mrs. McNamera considered. "It could have been aliens."