knowledge of a three year old

I spent three hours this morning babysitting six preschoolers so their moms could attend the MOPS (Mothers of Preschoolers) meeting held at our church.  It was a good morning - no poopy diapers, no crying, all in all very nice. Toward  the end of the morning there were just two kids waiting for their moms.  One  of these, a three year old girl, was having a good time playing with a Fisher Price airplane.  She explained to me, as she took two little people out of the plane, that they were going to take the plane through a "plane wash" (her words) but they needed a map to find the way. I asked her if they were going into their house to find a map, since she had taken them out of the plane?  She said "Oh, no, they'll just use their phone." Of course they will.  How antiquated of me to envision a paper map.