It’s a head-scratching phenomenon: Why, in an age when shows can be watched anytime, do the cable and broadcast networks continue to put much of their best programming in the same place? There are more popular shows on a single night than any viewer might watch in seven days, and more than the most shrewdly programmed DVR could record. (And that’s assuming an N.F.L. game doesn’t run into overtime and wreck your precisely ordered schedule.) (nyt)