Human beings look for patterns. We espy the moon, and we see a face. We study history and see it repeat (or at least rhyme, said Mark Twain). We look at the glory of the universe and infer a Creator.
We look at the science fiction genre and we (some of us) conclude that it is dying.
Just look at the number of science fiction magazines in print in the early 1950s. At one point, there were some forty such publications, just in the United States. These days, there are six. Surely this is an unmistakable trend.
Or is it? There is something to be said for quality over quantity, and patterns can be found there, too. The last decade has seen the genre flower into maturity. Science fiction has mostly broken from its pulpy tradition, and many of the genre's luminaries (for instance, Ted Sturgeon and Zenna Henderson) have blazed stunning new terrain.
I've been keeping statistics on the Big Three science fiction digests, Galaxy, Analog, and Fantasy and Science Fiction since 1959. Although my scores are purely subjective, if my readers' comments be any indication, I am not too far out of step in my assessments. Applying some math, I find that F&SF has stayed roughly the same, and both Analog and Galaxy have improved somewhat.
Supporting this trend is the latest issue of Galaxy (August 1961), which was quite good for its first half and does not decline in its second.
(see the rest at Galactic Journey!)