I bought this DVD set to broaden my knowledge on theoretical physics. However, from the instant I placed the DVD in my player to the last minute of the documentary it was a complete disappointment. Information is very superficial; no deep understanding of Universe is conveyed, full of no-sense animations, colors flying from there to there, a documentary that anyone would expect on Discovery Channel, full of metaphors that make no sense at all. If you posses some degree of physics do not spend your money on this. If it will be your first time to theoretical physics it's ok, though! Positive comments of others were very misleading this time...