On selective perception, how could we tell the difference between (A) the author suffering from this bias, and women and men are equally good, and (B) the aut

On selective perception, how could we tell the difference between (A) the author suffering from this bias, and women and men are equally good, and (B) the author is correct, and you think women and men are equally good employees because you suffer from the opposite bias. Selective perception may exist, but you've done nothing to show that the author's viewpoint is wrong and yours is right.