Read again "Worrywart" last night, in Groff Conklin's Operation Future anthology. I see that, when I was reading around in this book before, the Simak story was the one I rated most highly of the ones I had read.
The story reminded me of Ursula Le Guin's (later) novel The Lathe of Heaven, my favorite of her adult books that I have read.
Simak's titles can be so noncommittal that they don't help you to remember the story's plot after you have read it. Take, even, "Desertion" -- someone like me might have to go back to the story to remember -- "Oh, yeah, that's the one about ...."
I wonder if it might not be the case that Cliff, as a lifelong professional newspaperman, might have been a little bit averse to showy headlines?
His was an understated writing style all around, and surely that goes for titles, too...
I know for a fact -- he told me -- that he did not put much thought into titles for his stories; and his surviving journals give some support to that: sometimes he mentions working on a story without referencing a title, only giving some sort of descriptor (e.g., the "stamp story," which -- after being called "Spore" for a while, eventually came to be "Leg.Forst.")(Note: that particular title was indeed created by Cliff, as shown by the fact that he explains it in the story.) But even "The Big Front Yard" had three or four "working titles" in his journal before he sent it along to a magazine, and it's not clear that the final title was created by Cliff himself, or by the editor...)
(I tried to show some of the alternate titles in the blurbs I wrote for the stories in the COMPLETE SHORT STORIES OF CLIFFORD D. SIMAK -- which see.)(Clever ploy to get you to buy all the books...)
(Further note: "Bathe Your Bearings in Blood," surely the most flashy title of any Simak story, was definitely a label created in the editorial offices of AMAZING, and it is notable that Cliff changed it back (to "Mirage") in later appearances.)(It probably says something about me, however, that I rather
liked "Bathe Your Bearings in Blood...")
Having drifted a little from the original plan for this posting, I will add that Cliff's indifference to titles extended even to his novels -- several of his novel publishing contracts were simply for "Novel to be named later.")