I'm not sure what you mean by 3). We have a perfectly good "digital currency" and have had it for decades, it's called a bank account. I can click four buttons

I'm not sure what you mean by 3). We have a perfectly good "digital currency" and have had it for decades, it's called a bank account. I can click four buttons on my phone and a friend gets some money within 30 seconds. As for inflation, economists think a 2-ish-percent inflation rate is a good thing and work to keep it around there. To them it's not something to "tackle". Not saying I agree with it...