Spend, spend, spend?
It's like an avalanche.
A snowball of tumbling share prices began in Europe yesterday afternoon, picked up momentum on Wall Street - where the important S&P 500 index suffered its biggest loss in 21 years - and has been battering Asia overnight.
And that in spite of the £2 trillion pounds of taxpayers' precious money committed by governments to bank rescue plans all over the world.
What's more - and probably more worrying for the authorities - is that interest rates charged by banks for lending to each other for three months remain at disturbingly high levels (see my note from earlier this morning for detail on this).
It means that last week's dramatic and co-ordinated cut in interest rates by central banks is having an only limited impact on the cost of credit for businesses and individuals.
What we're witnessing is the limits of what these banking bail-outs can achieve in the face of what increasingly looks like the onset of a global economic recession.
Governments have been able to prevent individual banks from falling over. There's another example of that this morning with the announcement that Switzerland's national bank is lending a staggering £30bn to a special new company set up to extract poisonous assets from the huge bank, UBS.
But they've been powerless to prevent the banks contracting the amount of credit they're providing, which has reduced the ability of companies and individuals to invest and spend, and risks turning an economic slowdown into something rather worse.
That's why the British government is being forced to think about something new: a substantial and sustained increase in public spending to offset the contraction of spending by the private sector (there may be little point in cutting taxes, since nervous consumers and businesses would probably hoard any extra cash that went into their pockets).
A rise in public spending would increase the burden of public-sector debt, which is already - on one measure - above the government's self-imposed limit.
And paying off the increased debt would limit the growth of the economy as and when the economy turns.
There's also a risk of downward pressure on sterling and upward pressure on the cost of borrowing for the government, if the UK's balance sheet were perceived to be weak by international standards.
But ministers increasingly believe that may be a price worth paying, if an old-fashioned Keynesian stimulus to the economy meant that the UK suffered a shallow recession rather than a deep and dark one.