"The researchers can't say for sure that D.W. was directly controlling his pupils, but from their many tests, they did not find any evidence that he was using i

"The researchers can't say for sure that D.W. was directly controlling his pupils, but from their many tests, they did not find any evidence that he was using indirect strategies." By reading this paragraph it states that they cannot know for sure. This makes the article's title very "clickbaity" to me.