Several years ago I purchased a book that talked about and taught how to grow vegetable and fruit with fish tank on the side. It sounded incredible and fascinating. I didn't get into it because it required building the frame and the system. That's not my forte. I gave the book and instruction to a friend hoping that he would make use of it. However, he did not either. One time I heard about someone actually growing vegie and fruit in her house using the fish tank system. It amazes me that this method of cultivating vegetable has been widely used.
I like it! To people of age in the late 60s this message is new and valuable. May be you are young and knowledgeable, but this message is good for old mepple. I am 67 years old. My children are in their "forties" now. How do I learn the info in the element school text books of 20 years ago? I am sorry to say that I think you are just a narrow minded person not to think in a broad sense.