During the 15th century, the English would often store coins within pygg pots or containers. During the 18th century these vessels became referred to as “piggy banks” which is where the modern day term is derived from. Piggy banks were called as such because of the pygg they were comprised of which is a type of clay, an inexpensive, orange colored earthenware clay used to produce everyday vessels within England from the 15th century onward (e.g. pitchers, cups, pots etc.). The primary reason for this is that metal has been costly all throughout history, due to the difficulty of sourcing and producing it from ore, and because of this expense, alongside the fact that pygg is more commonly available and found in larger quantities throughout England, the English public relied upon pygg containers to hold not only food and liquids but also spare coins and other small treasures
If volume and weight are both calculated as 1 unit, when a cube is made 1 x 1 x 1 when accounting for its length, width, and height, and 1 when accounting for its weight, the entire cube is in equal proportion; a concept referred to as a “unit cube” called as such because each of its dimensions (e.g. height, width, length etc.) are 1 unit in length. This changes however when doubling the cube in size and weight. When doubling the cube to 2 x 2 x 2 when accounting for its length, width, and height, the weight does not move in lockstep, because it becomes 8x (2 x 2 = 4 x 2 = 8). This fundamental mathematical principle referred to as the Square Cube Law, explains why as animals become bigger on land, life becomes exceedingly difficult because of the need to maintain and support the large weight associated with such large stature. As animals become more massive, the effect of gravity places an increasing role in their lives. The shape and form of the body is forced to change. Bones become more massive to scaffold their large bodies. This is why the largest animals on the planet are found within the Earth’s oceans as being within water is a way to circumvent this outcome and helps explain why as animals become larger upon land, life becomes exceedingly difficult because of the need to maintain an appropriate structure and weight associated with such large sizes. This principle also explains why the concept of a giant (e.g. mythology etc.) is physically problematic as if a human being were scaled up proportionally to twice their normal height, their volume and weight would increase 8x, whilst the strength of their bones and muscles would not scale at this same rate. The result would be a life form whose own mass would overwhelm its skeletal structure, making movement, balance, and even basic survival virtually impossible without some form of environmental and/or structural intervention and compensation
