“Even when our understanding is consistent with our perception or repeated experience,
it does not necessarily indicate a fact.
For instance,
if we assume that a person is a woman simply because that person is dressed in a woman’s clothes,
this is called Viparyaya or mental activity that is based on something other than fact.
Viparyaya, then, is comprehension based on a perceived characteristic in the observer,
which leads to false assumptions.”
– T Krishnamacharya’s commentary to Yoga Sūtra Chapter One verse 8