And here is why what I've been saying for the past 20 years hasn't had any effect yet.
We’re reluctant to acknowledge mistakes. To avoid admitting we were wrong, we’ll twist ourselves into positions that even seasoned yogis can’t hold.
The key is to trick the mind by giving it an excuse. Convince your own mind (or your friend) that your prior decision or prior belief was the right one given what you knew, but now that the underlying facts have changed, so should the mind.