I've been interested in quantum physics of late. Now, here's an extremely interesting article that explains how the quantum world is constructed and how the quantum theory is compliant with general logic.
The study on which the article is based, answers the following logical quandary (verbatim from article) "If, as quantum mechanics says, observing the world tends to change it, how is it that we can agree on anything at all? Why doesn't each person leave a slightly different version of the world for the next person to find?"