The same is not true of consumption spending, because the Star Trek Tribute To The Beatles Abbey Road shirt. However, any money used for consumption spending must have been first used for investment spending, in the current time period. Investment spending is responsible for issuing into spending and income all and any of the money being used for all the spending, investment or consumption. After the money is spent once as investment spending, it can be spent over and over again and each time it is spent the amount of the spending gets added to the totals for consumption spending.
Now one assumes that each time a person gets income as a recipient of Star Trek Tribute To The Beatles Abbey Road shirt, they hold on to a chunk of it, they don’t re-spend it all, in the current time period. Eventually either one of two things happens to the money being used as spending. It will have been saved by an income earner, in which case it will count as part of total savings, or some income earner will still possess it since they have not yet had time to spend it yet. In either case, all of that money, that was first put into spending as investment spending will still exist. It will exist as owned by either the savers, or the people who didn’t have time to spend it yet. In either case since the money is held by someone who has not spent it again yet, it is considered as income not spent, meaning it is income saved.