Knowledge is power.
If you look at Drutharastra, he was never impartial. As a ruler, he might have taken his kingdom as very important rather his family. But he was always biased towards his son Duryodhana. That made him suffer and because of him, all the people of his kingdom suffered. Like this, there are many examples.
But we are all biased only. ALways we give importance to our earnings more than anything else. Many of the leaders are also biased and they try to get benefitted using the power. They help undeserving people for their benefit. Thus they are biased towards the people who take care of them. If all the leaders are impartial, the country might have progressed very well. But our leaders want their family members to come into power after them. This partiality only ruined our country. Always leaders should be impartial. Then only it will be good for the country.
Thoughts exchanged is knowledge gained.
Very often we do maintain double standards and such a policy is ruining our entire administration. But still we have pull of efficient bosses siding the talented staffs and for them
there is no substitute of hard work. They cannot be biased in any circumstances.