it's entirely circular logic. the party rules are that she needs 58% to win, not 50% to win. of course, if it were true that the party set the threshold at 50%, then that's what she would need. but, they very obviously did not do that.
well, unless you think that a pledged delegate is of equal weight to an unpledged delegate, which is an argument nobody would ever make. one would need to take that entirely ridiculous and elitist position to eliminate the circular logic, but it is itself a contradiction to take an undemocratic position to try and argue for a more democratic position.
just deal with it: the democratic party set the threshold at 58% because they wanted a strong candidate. hillary clinton has failed to meet the minimum threshold to win in the first round. the convention should therefore be seen as round two.
and, nothing could possibly be more american - if you understand what that actually means.
http://www.msnbc.com/msnbc/the-most-important-number-bernie-sanders-next-week-256