> Bitcoin will never become the "world wide common digital currency": it's deflationary in the long term, very volatile int he short term, and transactions are expensive and slow. Maybe some other cryptocurrency could, but not bitcoin.

You said that Lightning network would drop transaction costs thus making bitcoin workable. I said it would do nothing because the problem is not technical but social. But I don't mind if you understood a different thing.

Bitcoin could be workable, and be a world wide common digital currency, without starting a revolution, you realise. A dollar that I can send to people without a bank being involved is still a useful concept.

I agree with you. I just don't think the banks and their private governmental armies will allow it to happen freely. And yes they can stop it. They probably are behing its creation, not a fake japanese alter-ego.