"I hope this series is good work, but it is in the half-hour medium, which is limited to a kind of mediocrity that sponsors are just dying to have right now, and the public, for some reason, is unconsciously demanding"

Jackie Cooper is expressing his hope that the series he is working on will be excellent, but he is likewise familiar with the constraints of the half-hour medium. He thinks that sponsors are searching for mediocrity, and that the general public is automatically demanding it. He is recommending that the general public is not aware of the quality of the work they are taking in, which they are choosing less than they could have. He is likewise suggesting that the sponsors are not pushing for higher quality work, and are instead content with mediocrity. This quote is a reflection of the state of the industry at the time, and Cooper's aggravation with the absence of quality in the work being produced.