'Duh Vinci.' :> Good one!
Would it be more accurate to say you object to the phenomena which causes people to believe a lie after the truth is established? Well, maybe that phenomena has something to do with the way the truth is presented. Everyone has the right to be pursuaded in their own mind what the truth is. Though truth never changes, our understanding of it does. The Spirit of Truth must be present to enlarge upon that understanding. To encourage the desire for it.
Could it be that is what is lacking here? But even so, who here is a parent who presumes the authority and responsibility to instruct a neighbor's child?
But then, this thread is not a classroom. It is a marketplace of ideas. Want to out-sell your competitor? Better merchandising is the key. Talk up the unique features and benefits of your own product rather than ridicule the product in the next booth.
For myself, I'm just window-shopping and asking questions.