![[cartoon]](../../../graphics/CH/Ind/dup-hi.gif)
greeted his father several times in a row, and returned undetected to rooms he'd just left
Well, that's one of the correct answers.
That was when he had made five duplicates of himself, to share work.
(Well, strictly speaking, the original Calvin only made one duplicate.)
Artwork © Watterson/UPS; click for notice.