Have you ever tried to put pottery pieces together that you found? Just like the corner pieces of a puzzle, if you find the rim, they can be a lot easier to make it whole again. One of the coolest things that archaeologists in Ashkelon told me about was that if they find just a piece of a rim, they are still able to determine how big the whole vessel (jug, pot, etc...) rim would have been and what the vessel was probably used for. Watch below as Adam explains what scientists look for when the pots are pieced back together (you can also watch this video that shows what happens before this when pottery comes in from the field).