We find inequality in all world challenges (without 2 and 9). There are genetical causes, but depending from the family born in too. Many books were written on the subject e.g. by Anthony Atkinson and Joseph Stiglitz. Since many centuries the issue is treated in philosophy, religion, spirituality and social thinking.

Inequality in income and wealth

Thomas Piketty analyses the subject with the figures of two centuries. But the issue has many facets, not only economical – look to the physical attractivity. There are many bases for human envy. But for the individual in poverty (area 1 of world challenges) it is severe.

How these differences are accepted by the population we can measure at the height of fences, which the rich build around them or would like to build. Ideally this should not be necessary. But we can find countries with a lesser economic inequality e. g. the scandinavian countries. Comparisons that 8 people on the planet possess the amount of wealth as the poorest 50 % are not helpful.

Inequality in education – human personality and strengths

Let us take a look on the deeper roots of these inequalities, appearing in 7 of the 9 challenges. In first line we find the parts of personality constituting the defaults of birth and only less maniable. We start with the multiple intelligences of Howard Gardener (1993). Only no 3 and 4 are included in the normal intelligence-quotient IQ.

Gardner proposed later eight abilities (Video, Check minutes 5:00 – 5:55 and 8:16) that he held to meet his criteria:

1. musical-rhythmic
2. visual-spatial
3. verbal-linguistic
4. logical-mathematical
5. bodily-kinesthetic
6. interpersonal
7. intrapersonal
8. naturalistic.
He later suggested that may also be worthy of inclusion:
9. existential and
10. moral intelligence

I could add to this list further:
11. olfactory intelligence (perfumes)
12. gustatory intelligence (taste)
13. financial intelligence
14. humour intelligence

Human uniqueness

Looking to this enumeration of multiple intelligences we find automatically the concept of uniqueness of each individual due the many possible combinations.
And all these gifts receive different appreciation in economics and society. Following this we arrive at different material value. This, because the division of work influences much the economic income.
We see, that the causes of inequality lay in human factor including the values, in training&education and in biology of the human body and in our division of labor.