Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very slow

I'm up to the second chapter, but its not for anyone who has read the book or is an amature. The pace the DVD sets is slow slow, you need to find other things to do while watching it. Narration is the slowest ever for a documentary, even when telling you history. I'm sure the technical detail is there, just not made interesting enough to keep me watching, which counts all kids and teenagers out as well (I'm 25).I don't think I will watch them all, I don't have that much time, I will read the book again instead - much quicker.I won't buy a PBS DVD/Video again, lots of advertising on the disc, sponsorship messages.