In general, the law of contradiction was complicated to use unless you were looking to generate minor effects, nothing on the scale of the experiment between Sasha and Silvia. The more complicated and challenging the desired result was, the level of difficulty and price to pay grew exponentially. Back then, Desmond spent nearly a week with his right arm almost paralyzed due to side effects.
In the last few weeks, Desmond had not only spent his time training with Claire but also turned his attention to this new ability by finding new ways to use it. In Desmond's current understanding, his law of contradiction was both rare and valuable as long as one had the necessary imagination.