Really, who comes up with these notions?

Don't they ever stop to think that maybe, just maybe there'll be a limiting factor that will kick-in before their conclusions are reached. Or do they just want to manipulate people with an eye-catching headline (hint: you succeeded, but I have no respect for your ability to draw conclusions and therefore for any of the "facts" you state). Worse, do they thnk that the general readership is stupid enough to believe this stuff?