Excited Doctor Who fans are already clamouring to be a part of the new DVD release of the Matt Smith series, a series that hasn't been broadcast yet and whose DVD isn't available until June. It seems that some are already reviewing this DVD on Amazon, which is amazing. Perhaps these fans have mastered the art of time travel and have already seen the show, in the future, and come back to review it. Or perhaps they don't understand the word review and how it compares to "preview" or "reeling out my dogmatic fixed opinions".
Two things make me unworried about this. One is that I am looking forward to this new series either way and will watch it as excitedly as a child, provided we get our TV aerial to work, or so long as my computer and iPlayer like each other. The second reason that I don't mind that people are posting somewhat provisional reviews is that there's always someone else on the internet to counterbalance them.