Why is it a bad idea to have only one person in charge of a government

if only person was in charge of a government, it would gradually convert into a dictatorship, simply because there are no other branches of the government to keep the executive government in check. This is why governments have three branches, to make sure power is balanced. Two branches and even four branches wouldn't work because of uneven balances in power.

where is the passage?

can't without the passage.

post the full question.