I'm not convinced biases are real in either me or anybody else in realistic situations, as opposed to highly artificial laboratory setting.

Here are two very extreme "biases" of perception - they're shocking the first time you see them, and even if you know about them you can do absolutely nothing to reduce their power:

• auditory illusion
• optical illusion

In laboratory setting we can use such "biases" to manipulate people, and make them fail tests. But these same "biases" actually help more often than hinder in real life.

Is there any serious evidence that "biases" are significantly harmful on average in nonartificial settings? This is the big unspoken assumption, but evidence is lacking.