Meeting the individual learning needs of every learner, every hour, of every day although espoused by educators, has only been a dream.....an impossible dream for educators facing student-teacher ratios of 25 to 1. But, alas, it is now a reality....a reality that is hiding in plain sight. Inevitable: Mass Customizing Learning (MCL) describes a detailed vision of how schools can change from the present outdated Industrial Age, assembly line structure to a mass customized learning structure with the capacity to meet the individual learning needs of every learner.....that's every learner, not some, not most, but every learner. iTunes, Amazon.com, Verizon, Wikipedia, and Google (to name a few) are doing it right now. They prove to us daily that mass customization is effective and efficient and...well...doable.