General rule: give nub of take-home message in a
For talks: Indicates scope of presentation by informative title
For papers: more formal than for talks since range of its audience is harder to predict.
"Legalizing Drugs Makes Matters Worse" The readers then knows what to look for to see if the author (James Q. Watson) makes the case.
Modeling the Unmeasurable Mesoscale in Materials and Geophysics
Toward Better Understanding of the Materials that Make Our Earth Interesting
Answer: Committte report to US funding agency to create a program that would solicit proposal on modeling materials, especially those found in the earth.
Were Sacco and Vincenti Guilty?Since they were judged guilty in a court case that has been attacked for ages, "no" isn't interesting. Using "innocent" wouldn't help. Indeed it is nearly hopeless to energize this title.
As difficult is:
Will we ever know if JFK Died by a single hand?
These extreme examples suggest strongly: avoid question titles!