User blog comment:Kevo411/More Hunter x Hunter Questions/@comment-48285-20140916002114

1. Killua only found out about the needle when he pulled it out. What made him pull it out in the fight with Rammot was because he didn't want to run away and leave Gon, who couldn't use his Nen, at the mercy of Rammot. So, he had conflicting feelings and the "logical" solution is to attack the source of the confliction. In this case, it was his own mind.

2. Sure people wouldn't just randomly wander into the Numere Wetlands, but it could happen. Plus, there are several other creatures around. Each place has its own ecosystem set up and the creatures that live there find a way to survive.

3. Pretty sure this was in another one. But, I guess there are two possible explanations: 1) He thought he could win without using Nen. 2) He didn't get the chance to use his Nen.

4. Not everybody heard Majitani surrender. Kurapika had a firm grip on his mouth.

5. Uh.. Which attack are you referring to?

6. I don't know. Maybe because it takes more concentration to do scissors. And, as we all know, Gon isn't one for concentrating that much.