What is Speechless Sunday, wordless Wednesday and Why?

I have a question to all Active Rain members: What is this Speechless Sunday, wordless Wednesday? 

I am just wondering is this, because we are running out of words? Are we running out of Ideas? So in spite of the lack of flow of creative juices in our brains, instead of just sitting out we must put a post up, because we are in desperate need of the 200+ points is that what this is all about? Please educate me. 

If it is just about getting points with no thought process involved, then may I humbly suggest the following: What about Silent Tuesday? What about Quiet Thursday? How about Tranquil Friday?  OK we will leave Saturday alone. Nay that would be to hard let’s just introduce “one word Saturday” This should help. 

If I am totally off base, please tell me. How did this come about? What is the history? I would like to know. I hope I am not the only one. Thank you in advance for your input.