Marco, you are the Grand Vizier!
Any triangle with the same base and the same vertical height has the same area. Also by equivalence the canal base of any choice of stake location leads to the same length of bank for fishing.
Now the Grand Vizier saw money in this. He decreed that the far bank could only have one stake but that it could be shared.
In his beneficence, he advised all future Stakeholders they had to buy their fence pickets through him.
The Grand Vizier became known as the one who invented banking, stakeholders and shares; the world of finance created in one day.
Acorn
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