>why is the use on a black or a grey market a put-down for a currency? The lack of accountability in black market transactions is a feature. In regular transac

>why is the use on a black or a grey market a put-down for a currency? The lack of accountability in black market transactions is a feature. In regular transactions this is a hindrance. The basic examples I can think of would be preventing funding terrorism or human trafficking - which I personally think is a net good. Or even more basically the ability to contest and reverse charges.