had long been viewed
... that although randomness had long been viewed as an obstacle, it is now used as a tool for designing better algorithms?
... that although randomness <i id="mwDrs">(example pictured)</i> <b id="mwDrw"><a href="./History_of_randomness" id="mwDr0" rel="mw:WikiLink" title="History of randomness">had long been viewed</a></b> as an obstacle, it is now used as a tool for designing better <a href="./Randomized_algorithm" id="mwDr4" rel="mw:WikiLink" title="Randomized algorithm">algorithms</a>?