There&#x27;s a strong bias in all disciplines towards &quot;positive&quot; results, i.e. those that demonstrate an effect.  They&#x27;re more exciting, and in the short term they&#x27;re usually more profitable.  There isn&#x27;t a lot of tolerance for thorough examination.  I feel like science didn&#x27;t use to be this way, or at least the romantic stories I was told about science didn&#x27;t go like this.