There 's always at least one kid with a backpack or book bag of enormous proportions ; more often than not the voluminous vessel is coupled with an individual that has the tendency to barrel down the hallway , oblivious to the fact that with each step he is sending human projectiles left and right and that pandemonium has ensued . With all of the other adjustments that come with middle school , one takes it in a stride and catches on quickly that stepping into a doorway is a fine idea when the dark - blue L.L. Bean Deluxe Book Pack ( only 39 $ ! )
According to the above context, answer the following question.
Why may one get hurt in the school hallway ?


There is a kid with a large backpack .