The current worst case scenario involves a 28% wick below the 200-week moving average, one theory suggests.

The European Union "is finished," Arthur Hayes says, while yield curve control will put the U.S. in a "doom loop."

The outlook for the coming months is pain for risk assets, but central banks have a reality check of their own coming, say analysts.

It's a case of "if in doubt, zoom out" this week, as Bitcoin heads for a showdown with Taproot and ETF approvals.