The policy to be pursued during a period of falling prices cannot be stated so briefly. The difficulties involved have already been discussed at length.[133] The following policy based upon that analysis is tentatively suggested. The complexities of the subject are too great to permit of dogmatism. Firstly, the occasion for the price decline may be such as was termed "natural," as for example when it is brought about by a general advance in the arts of production, or by the development of the means of transport. In this case, it will be satisfactory to keep wage rates unchanged, though prices decline. It is in these periods that chance is afforded of bringing about genuine improvement in the economic position of the least favorably placed groups of wage earners. Secondly, the price decline may be a sign of reaction from a previous period of rapid price increase, and of a general tendency on the part of entrepreneurs to keep down production costs and to proceed with circumspection throughout. Nevertheless if little forced liquidation occurs; if there has been no serious overextension of credit during the previous period; if the maintenance of the existing price level, or of a slightly lowered one, would not impose too great a strain upon the banking system--there would be no good cause to reduce wages. This judgment rests on the supposition that the facts of the industrial situation give promise that industrial recovery will take place even if prices do not drop greatly, and drop gradually rather than sharply. Thirdly, the price decline may be caused--at the beginning at all events--by much forced liquidation of a character that is disastrous to the enterprises compelled to liquidate. It may have been preceded by a great over-expansion of credit; and the maintenance of the existing price level might mean a steady source of danger to the banking and commercial system. Then the soundest policy is to reduce wages as prices fall. To the extent that the trouble may be due to special causes such as over-investment in particular directions, this reduction of wages may be unnecessary. But it will probably be found that the recovery from a genuine industrial crisis will be facilitated if a heavy price decline is stimulated by wage reduction. No wage reductions should be undertaken unless conditions making the case are clearly present. The central authority could avail itself of the advice of the Federal Reserve Board. The lowering of wage rates might be put off until the price decline has reached, say, eight or ten per cent. And the percentage of the reduction of wages might be smaller than the percentage of price decline; say, a three per cent. reduction of wages for every four per cent. reduction in prices. Lastly, when it is judged that the pressure on the financial system is definitely at an end, no further reduction in wages should be ordered even though the price decline continues.[134]