Thank you for admitting then that your definitions are illogical and based on pseudo-scientific bullshit rather than anything that could be described as logical or objective as well as being hopeless provincial and based on a rather narrow-minded, ignorant, Americo-centric view of the world.
I also think it’s hysterically funny when you say “I understand that some people won’t fall into either category or appear mixed” when the overwhelming majority of African-Americans “appear mixed” and to the people of virtually all countries where the majority of the population is of Sub-Saharran descent “won’t fall into either category”.
Now, by your rather sulkily quoting my comment regarding Brazil you seem to be implying that you agree with the Brazilian definition of “white”.
So, why do you disagree with the Brazilian definition of “black”?