Why is the world economy is sliding down, a bit reminder to 2008 when the world economy is in freefall, The shock waves from the collapse of Lehman Brothers maybe on of the main factors.. The economic indicators - trade, industrial production, unemployment - are comparable to the early stages of the Great Depression in the early 1930s.
Government debt and over-leveraged central banks are the biggest systemic threat. People like to point to commercial/investment banks because of 2008, but now they are far better capitalized. But over the same period, government debt has risen something like 30-40%.
I'll admit, the trade war rhetoric has me worried. It's been said before that real wars are preceded by trade wars. In the the 1930s, trade collapsed among nations. I don't think it's a coincidence that militarism and fascism thrived in this context, leading inevitably to WWII.
My point is, how bitcoin could take place to helps the Economics rise again or it would be an additional threat to economy stabilty ??
There can be job creation around Bitcoin and blockchain technology. As adoption continues, legacy services and pioneers alike will need to build and maintain crypto-interfacing applications. But this may not represent actual economic growth. We may find that companies like Robinhood, Square, Coinbase and others cannibalize the old guard entirely.
On a macroeconomic level, Bitcoin probably means a great redistribution of wealth from one group to another, more than anything else. It's not productive, just speculative.