literally just name every function with its purpose
helper_iterator_call_this_to_add_to_credits_balance_if_payment_has_been_made_or_in_case_of_refund()
simple
MAKE INVALID STATES UNREPRESENTABLE
MAKE INVALID STATES UNREPRESENTABLE
MAKE INVALID STATES UNREPRESENTABLE
MAKE INVALID STATES UNREPRESENTABLE
MAKE INVALID STATES UNREPRESENTABLE
MAKE INVALID STATES UNREPRESENTABLE
We just know too much now, it's not possible for one person to even pass as an expert in everything because each subject has really expert-y experts who would inevitably know much more