Credibility is a tangible intangible, an asset of social, political and business economy opening and shutting doors with equal swift. It is a subtle defined currency that bygone champions like Nelson Mandela were simply endowed.
A probable litmus test of this was sitting on the same table, discussing building a (rainbow) nation with those who previously discriminated and oppressed black people in South Africa. Although regarded as a compromise by some, alternate views would suggest that it was the beginning of a new form of leadership in Africa, founded on credibility.