With human proportions understood the relationship between diverse human parts and the relationship between humans themselves. All man-made, including all designs, builds on basic human proportions. Besides that, the relationship seen in Fibonacci series of numbers, the entire human body:
Fibonacci series of numbers can be seen everywhere in nature, eg the ratio between forearm and hand joints in the fingers, the length and height of the face, etc etc.
Since all designs are based on human proportions, and human proportions has a connection to the Fibonacci ratio, the total design also indirectly have a relationship with Fibonacci. All natural / human is also based on Fibonacci relationships and therefore must also fit the proportions of human proportions.
We can therefore conclude that everything around us in everyday life, theory fits our proportions. Yet we find things that do not suit us.
Have been identified as including idealmål fibonaccitallene computed after. The problem is that none meets these goals. Eg should I, if you figured in my head size to 1.84m. high, but I am only 1.80. Same height should in fact be the same as 8 of your heads placed on top of each other. There are many such rules, and although they often come close, is a human never one hundred percent perfect.
In addition, people have different heights, and some have disabilities, which stops them from doing what other people do. This is why, when designing, not just assume Fibonacci series of numbers and ideal goals, but we must make products that work at different degrees of abnormalities: a chair that can be varied in height, belts, an adjustable saddle, glasses, etc, etc. available products that can be adjusted a lot and is thought to be able to be used by people with many and large abnormalities, and there are products where the user must belong to a very specific audience.
