What mechanism do they use to control your eyes, your hand, and your brain, forcing you to read their content in its entirety? And is it the same mechanism tha

What mechanism do they use to control your eyes, your hand, and your brain, forcing you to read their content in its entirety? And is it the same mechanism that keeps you from clicking "Hide" on such content? If this mechanism could be isolated and productized, we could make a fortune on it!