it and why would we care in general and why would we there in this class so what is it it's an data you might want to reduce the number of bits for encoding a message a message could be an image you want to send or part of speech or maybe some music you want to send across on communication line and it's an original in a collisional format might take up a very large number of bits and you might want to be able to get that same information across by seeing last bits in the communication channel so what does it