Why are two woman witnesses, equivalent to only one male witness in Islam ?

Re: Why are two woman witnesses, equivalent to only one male witness in Islam ?

I think rather than being rigid and totally inflexible, God given common sense should be used and applied. In the above specific senario, how can you doubt the financial wisdom of female MBA's or CA's and try to equate them with the average uneducated Joe on the street. It just doesn't make sense.