One piece of paper stands between me and ending the year with a clean desk: a list scribbled on hotel stationery that compares different customer data systems to different types of motor vehicles. Richard Scarry  meets CDP Institute, you might say. So, just in case your New Year’s plan includes explaining marketing technology to a five year old, here we go: Data Warehouse = School Bus. The seats in a business are lined up in nice neat rows, designed to…