The exchange, paraphrased: andrenotgiant: I am unfamiliar with this area, so I need evidence to convince me that this technique makes a difference. matnewton8

The exchange, paraphrased: andrenotgiant: I am unfamiliar with this area, so I need evidence to convince me that this technique makes a difference. matnewton85: I am personally familiar with this area, and my personal experience says that this technique works. So, the answer to your question is: because your personal experience does not qualify as evidence to someone else.