OK, so maybe leaving out words in headlines won’t motivate all students to learn, though it does motivate at least some of them.
I’ve certainly found that true when I teach editing. Once students start to see errors in professional work, they begin to realize how easily mistakes can slip through. They also begin to understand the ramifications of those mistakes.
I sympathize with headline writers when I see typos like the ones above and below. When the same work appears in many different forms, it’s inevitable that mistakes will slip through either from human error or from computer glitches.
That’s all the more reason to watch closely for those missing, especially in headlines.