So basically, at my work at a science center, we have this exhibit where you lift yourself using different pulleys. I noticed that the pulleys were labeled wrong. They should have been, 1/2, 1/3, and 1/5 but were labeled, 1/3, 1/4, and 1/6. I brought this up with management and received an email from the VP of Education with a document explaining why I am wrong. http://imgur.com/MlT8cVh That's what she sent me. But I am still not sure and I have spoken to a few people that have told me that the advantage of the pulley doesn't change whether you are on it and pulling or self or not. So I was wondering what you guys thought. I just want multiple opinions before I tell the VP of Education that she is wrong. Thanks for the help!