The Consistent Conventionalist View of the Human Mind

The view that all essences are conventional, if you had an across the board, anti-essentialism, is in any event ultimately incoherent. The arguments for conventionalism would, if they had any force at all, apply to us just as much as to anything else. Yet we know that they're wrong when applied to us. What reason can we have then to take them seriously when applied to other things? And since I've reached the end of my outline, I will stop. Thank you.