I just tried creating an account that differed from an existing account in the number of dots, and it was refused, explicitly on the grounds that periods and ca

I just tried creating an account that differed from an existing account in the number of dots, and it was refused, explicitly on the grounds that periods and capitalization are ignored. Therefore, either at some point Google got this wrong and allowed the creation of such aliases to an existing account as if they were distinct, or this person is mistyping one of the non-dot characters of their address.