Answer:
i would say marginal analysis and scarcity
Explanation:
See scarcity at other answer
Marginal analysis is an examination of the additional benefits of an activity compared to the additional costs incurred by that same activity. Marginal refers to the focus on the cost or benefit of the next unit or individual, for example, the cost to produce one more widget or the profit earned by adding one more worker. Like she chose to have one bucket of water per task she had to do with leftover water, inted of having a bath and using all the water. Like oppertunity cost.
With the concept of zero, we could express math (and by extension, everything) with just one concept: of there being something. This was contrasted with there not being something.
This presence/absence of something is very easily implementable in mechanical terms, which contributed to the development of hardware. So: the concept of 0 made our calculations easily physically implementable.
In a time of downturn, the economy needs a push by implementing at least temporary help with fiscal policy . The government can assist with many creative ways from social insurance to building roads and thus generating new jobs while the upturn approaches. The difference is that negotiations over automatic stabilizers can be carried out when the economy is doing well and delay isn't as costly, and the negotiations only have to be carried out once instead of in each and every downturn.
This statement is correct. true.