What heuristic or bias is at play when drawing conclusions from headlines only?
If the headline confirms a strongly held prior belief, or is antithetical to prior beliefs, then no need to read.
Consider an article titled, 'the world is round' ... no need to read it as I already believe that.
An alternate title 'the world is flat' ... no need to read that either.
An article 'the world is changing' may pique my interest and cause me to read further.
I wonder whether any heuristic or bias is at play, or whether an evaluation mechanism that judges the perceived benefit of reading the article versus the time opportunity cost of engaging with it.