Prudence

by Jeff

Image text: Moments later, the White Witch rolls up and, confused, tries to tempt the probe with a firmware upgrade.

This comic is a reference to the book The Lion, The Witch and The Wardrobe by CS Lewis and later made into a movie.  The children in the book are playing "hide and seek" in an unfamiliar house when one child hides in a wardrobe.  They then find a entire world known as Narnia behind (or inside) the wardrobe.

The comic is making a play on the Narnia tale, by instead of the child exploring the new world herself, she sends a probe.  This is similar and possibly a reference to the probes that NASA deploys to gather information about new worlds.  It also may be a reference to Stargate, in which the Stargate Command sends a probe to new worlds to gather information about the world.

EDITED TO ADD: The title appears to be a reference to the fact that the child in the comic does not run blindly into the new world, like in the book, but instead she deploys the probe to gather information first, which would be seen as "prudent".