It's simply a mater of Hollywood not having any imagination. When somebody comes up with and idea, everybody copies it. Some of the cycles I have seen are Variety shows, Westerns, Detective, Spy, Space, Family sitcoms, People thrown together under one roof, talent shows and the one that is winding down is reality shows. Hollywood is looking for the next hot thing and they don't always get it right. This will run out of gas at some future date and Hollywood will be on the hunt for the next big thing. These shows are not intended to educate but are for entertainment. If people want an education they turn on PBS or another like channel that has far more content and far less fluff than these shows have. I am somewhat offended by them because I don't think they are a true reflection of the community but as I said, they will only be around for a short while until Hollywood moves on to something else.