There seems to be zero proof to that. Too long ago that I can up with actual citations I read about studies that said a better way to "retain" information, in the context of college reading material, is recitation. With recitation they meant verbally explaining the content from memory. One of the problems with most such studies is that they don't compare techniques with each other.
I can read a book on a subject, and understand it to a degree. If I write down what I learned in my own words, then I must come to grips with the fact that I didn't understand everything; writing it down forces me to come to a better, more organized understanding. Teaching it to someone else means I must be able to explain for someone who does not necessarily have my own background, and who may stop me to ask questions. Programming the knowledge to a computer means that I must account for all questions; the knowledge must be completely and precisely defined.
I reckon very little knowledge has yet been adequately programmed into a computer, but many people stop at the first step, and never write or teach.