Why might it be better to run a blind taste test instead of where the tasters know difference between things they are tasting beforehand?

There are several reasons why it might be better to run a blind taste test instead of one where the tasters know the difference between the things they are tasting beforehand:

Elimination of bias: When tasters know what they are tasting, they may be more likely to be influenced by their expectations or preconceived notions about the products. For example, if they know that one product is more expensive or has a more prestigious brand name, they may be more likely to rate it higher, even if it does not taste better. A blind taste test helps to eliminate this bias by keeping the tasters from knowing which product they are tasting.

Focus on taste: When tasters do not know what they are tasting, they are more likely to focus on the actual taste of the products, rather than being distracted by other factors such as appearance or packaging. This can lead to a more accurate assessment of the products' quality and flavor.

Identification of subtle differences: A blind taste test can help to identify subtle differences between products that might not be noticeable if the tasters knew what they were tasting. This can be especially important when comparing similar products or trying to identify the best product for a specific purpose.

Encouragement of honest feedback: When tasters do not know what they are tasting, they may be more likely to provide honest feedback, without worrying about offending the person who made the product or the company that produces it. This can lead to more valuable insights and a better understanding of the products' strengths and weaknesses.

Overall, conducting a blind taste test can help to create a more objective and unbiased evaluation of the products being tested, leading to more accurate and reliable results.