Global stock markets are continuing to fall as investors worry about how deep the downturn is going to be.
Calling the bottom of the market is a tricky job
The Nikkei in Tokyo is at its lowest level since October 1982 and stock markets seem to be falling throughout the world.
Every so often, there is a day of gains, but these have tended to be wiped out later in the week.
This comes despite trillions of pounds being pledged worldwide to secure the future of the banking system.
Has something new happened to spark the latest falls?
It is hard to point to specific events, but the falls seem to have been linked to attempts to solve the problems not reaping immediate rewards.
The Group of Seven (G7) issued a statement effectively threatening to intervene to weaken the yen, but the yen kept on rising against the dollar.
The Japanese government promised further steps to support share prices, but the shares carried on falling.
Meanwhile, governments around the world have pledged eye-watering amounts of money to get banks lending to each other, but they are still not doing so.
“Every week credit markets remain dysfunctional is doing unknown damage to the macro economy,” said Thomas Lee at JPMorgan.
With the prospect of an approaching global recession, any bad news is knocking several percentage points off stock markets.
What happened to the cheer from the bank rescue packages?
There were indeed big gains on stock markets a few weeks ago as countries seemed to be prepared to work together to solve the banking problems that were at the heart of the credit crunch.
The problem is that despite the rescue, there is a widespread belief that many of the world’s biggest economies are going into recession.
The oil price has fallen, with Brent crude dropping below $60 a barrel, because it is thought that as economies slow there will be less oil used. The same argument goes for copper or coal.
That means that there is likely to be less demand for the products of the big global commodities companies that are particularly well represented on the FTSE 100.
What is going on with currencies at the moment?
There have been wild fluctuations on the currency markets too, with the G7 expressing concern about the volatility of the yen.
Also, the Australian central bank has taken the unusual step of intervening to support its currency twice in a few days.
But it really is the yen that is grabbing the headlines, hitting 13-year peaks against the US dollar and a six-year high against the euro.
The yen has been strengthening as a result of the end of the carry trade, in which traders borrowed the Japanese currency and used it to buy currencies with higher interest rates.
As the difference between Japanese rates and those elsewhere in the world has fallen, traders have been unwinding the carry trade, which means they have been using other currencies to buy yen, which has boosted the Japanese currency.
The strong yen is a particular problem for Japanese exporters, which see their products becoming more expensive for customers overseas, who are already being hit by their own national downturns.
How much further down can the markets go?
Spotting when markets have reached the bottom is a tricky and risky process.
Many traders believe in the idea of capitulation, which broadly means a market surrender.
This is when investors are prepared to get out of the market at any price because they have given up all hope of making money from their shares.
It is often marked by panic-selling and very high volumes of transactions.
The idea is that after capitulation you reach a point at which the last investor who is desperate to get out of shares and move into supposedly less risky assets has sold out.
Once there is a widespread belief that the bottom has been reached, bargain-hunters pile in and the market recovers.
Have we reached the bottom of the market then?
It is really difficult to say.
Some people think we’re nearly there.
The trouble is, some people reckoned we’d reached that point last month.
There were those who declared capitulation had been reached on 15 September when the Dow Jones index fell 504 points in a day.
But since then it has fallen another 2,500 points.
Capitulation is easy to spot in retrospect but the people who recognise it accurately at the time can get very, very rich.
News reported by The BBC