Which is a summation of his whole past.
But karma isn't infinite, so this system has a boundary.
Yet for most of us, it is exceedingly difficult to go beyond the boundary for it requires a lot of Will.
So what often happens is, when dealing with an opposing opinion, this system processes it and manufactures the same old product. That is, in each such practice, the system strengthens itself. Existing karma is again thickened.
Therefore, unless we are a master of destruction of karmas like a Buddha, otherwise, we should avoid confronting such systems once we identify them as such. Or, we will be guilty of making that karma worse.
It took me years to see this.
Common wisdom summarizes it : Don't try to change people.
Maybe this is what others think of me too.
