The little ones do not understand why people use calendars. The little ones don't know what they want to do in an hours time, let alone a few months. The idea seems a bit strange to them, and they approach calendars with a wee bit of suspicion. In the past they believed that calendars told the future, but now they know that isn't true.
As Wee Small says "How can they know the future. They can't even talk."
Wee Tiny has been looking at it "for hours" (let's translate that as really about 50 seconds) and it "doesn't spoke once!"
There you have it. Calendars - future telling wonder devices? Or a preposterous pile of poppycock?