If you memorize a poem in a particular place, and then remember the poem the next day, you will also remember the place you where you memorized it. The test for a class should take place in the same classroom where the class is taught. If I am listening to the radio, All Things Considered, for several hours in the car, until a particular story is repeated, I will know the exact place I was when I heard this segment the first time. If you make a drawing of something, you will never forget what it looks like, even if the drawing itself bears no resemblance to the thing drawn.