The "you" here is misleading. Consider any scientific field, then now consider all the people you know. How many people do you know, if any, who can propose a theory that is equally valid compared to scientific consensus on some topic in that field? It's unlikely most people are friends with Aristotle or the like or are themselves in that boat.
Is it theoretically possible? Sure. Is it more likely that you or I or the stranger who fills this theoretical situation is actually an over confident moron? Overwhelmingly yes lol.