User blog comment:PsiCubed2/Letter Notation Part III/@comment-80.98.179.160-20171108082401

Letter notation needs I and O. If you don't use them „for confusion of 1 and I and O and 0”, by logic, you wouldn't use Z for confusion by 2, A for confusion by 4, B for confusion of 8.

Disabling „confusable” letters disables some googolism definitions!!!!!!!