Another important Keynesian idea that Rallo tackles is the famous liquidity trap. A liquidity trap exists when, in a depressed economy, interest rates are very low. In such a situation Keynes regards monetary policy as useless, because speculators will just hoard newly produced money. Speculators will not invest in bonds because they are at maximum prices and will fall when interest rates finally rise. At this point monetary policy becomes impotent. Public spending becomes necessary to stimulate aggregate demand.
Rallo shows that after an artificial boom, in a situation where there are many malinvestments and a general over-indebtedness in the economy, there is indeed almost no demand for loans even at very low interest rates. We are actually faced with an illiquidity trap, as agents struggle to improve their liquidity. They want to reduce their debts and not take on more loans. The monetary policy of low interest rates actually worsens the situation, because with low interest rates, there is no incentive to prepay and cancel debts (because their present value is raised). The solution to this situation of general uncertainty is hoarding, stable institutions, the liquidation of malinvestment and the reduction of debts.
In contrast, for Keynes, the problem is always insufficient demand. So what can we do if consumers and investors do not buy the goods of that companies offer, but instead hoard? Well, Keynes recommends lowering taxes and interest rates, to devalue the currency, or that the government buys the products for consumers. But, why, asks Rallo, should consumers and investors buy goods they don't want?
Keynes’s answer is that otherwise unemployment will increase. Rallo responds astutely: But if a person is forced to buy with his salary something that he does not want, why shall this person work at all? The alternative to forced buying is to lower wages to their discounted marginal value product, which increases production and demand. As Rallo points out, society does not get richer if the government induces or forces people to buy goods they don't want. Thus, for Rallo the essence of TGT is the following: when people do not want to buy what is produced, the government should force them to act against their will.