Productivity and disability. These two directly correlate to job performance, while traits such as gender or age have much less to do with it.
The geocentric model stated that Earth was the center of the universe, and all other bodies revolved around it
Hope I am giving the right answer to the question.
Buddhism and Hinduism are similar because their architecture is vibrant and colorful. They both have dharma and believe in reincarnation. Both of them also believe in karma. Many people in Thailand, a dominant Buddhist country, tell the story with Hindu gods, but share their Buddhist architecture intertwined.
Have 'strong countries' stop attacking other countries without any reason. This will greatly reduce terrorism.
Make the laws apply equally to the rich and the poor - worldwide.