Like novels, box sets require an investment of time, attention and emotional energy. They repay rewatching - in the same way good books repay rereading. Also, some of them star Sean Bean in bearskins and leather. And they do it through brilliant, compelling storytelling. In an age in which novels seem to have almost literally lost the plot, this willingness to provide a clear, well-paced narrative is a rare attraction.
The way we consume television these days also brings us closer to the process of reading, rather than watching. With the advent of Netflix, Amazon Prime, iPlayer and all the forms of TV on demand, programmes have become unshackled from time and space too. We consume them at the time, in the place and in the amounts that suit us. In other words, we immerse ourselves in them as we do in books.
Now we are in something of a virtuous circle. Writers and producers know that they have an attentive audience who will no longer lose the thread of a plot during a week's wait for the next episode. They are alert to, and appreciative of, proper character development - inconsistencies will not be softened by intervening days. Intelligent, sweeping narratives can replace meaningless and unlikely rat-a-tat plot points. Writers must "write up" to this newly awakened audience, and they are.
It is, of course, still true that there are lots of books which are much better than lots of TV. But the gap between the greats is narrower than ever, and closing all the time. Plus - Sean Bean in bearskins and leather. Rochester, Darcy - you all need to up your game.