well if you think it hard enoough, remove that thing will be pointless. the idea of that is about get information and think twice about your moves. you wanna risk to try with one npc 8/10 (knowledge) or you wanna try it when you get 10/10. i find it like really funny and sometimes unfair, (like this guy that got all his characthers exept one with 100% of succes rate, and ask you to fail 3 times, c´mon!) but the energy thing is kinda the point of that minigame.