ケインズが説明する消費の傾向

ケインズによる雇用が生産高によります。
When an entrepreneur decides how much to produce and thus how many people to employ, he must consider aggregate demand, which is the sum of investment and the propensity to consume. I have some confusion about the propensity to consume, as Keynes points out that it is more correlated to net income than to income. He seems to indicate that net income represents income with some costs deducted, and depreciation is one such cost mentioned. However, he also indicates that "user costs" may also factor into the discrepancy. I was of the understanding that user costs were to account for output of a previous time period which was depleted to account for a portion of this period's sales. He also mentions "sinking funds" which seem to be repayments of debt at a rate faster than the item purchased with borrowed funds is declining in value. Keynes, in chapter 6 of The General Theory of Employment, Interest, and Money, defines income to be A-U and net income to be A-U-V. Basically, the distinction is that A-U is what influences an entrepreneur's decisions as a producer, while A-U-V is what influences his decisions as a consumer. So, it seems that, when he mentions that net investment may include user cost in some figures (and is thus inflated), he means that user cost is not entirely deducted from net income and, as income=consumption+investment, is thus applied to investment.