this chapter was interesting in several ways.
1. the DD puppet was an exelent idia for the plot to continue, but the way it came to be… the way i see it it was used as plot armor, why would DD go around in his puppet if he dosent expect fighting. sure he could have sensed lufy and rebeca coming with haki but he didnt show any sign of doing that. so the doll dosent make any sense.
2. the robin - koala issue: i find it hard to belive that robin talked much about luffy during her stay with dragon, becouse we saw that dragon is trying very hard to seperate life from work. and beside if sabo didnt tell her that he was a brother to luffy i dont think she would have known (i dont remember luffy telling her)
3. pica: OMFG, this is just a bit overpowered? i mean fine DD can cover an entire island with strings that are harder than steel and as sharp as razors but the abillty to control the entire island itself??? i dont see any way of beating such a thing.
4. kinemon: it appears to me tha oda is dilibertly trying to "mask" his actions in order for him to be the underdog in the arc. the one who goes around unnoticed and than makes the big boom we expect from him.
5. the social expirement: we have seen DD refering to human nature befor (the coloseum) but in regards to the fact that the entire island now hates him i think his plan will backfire.
6. there is one thing i dont understand, why did pica lift the factory? its like he is asking them to destroy it. and to that matter: i dont think chinjao can brake it. its as hard as diamond, the handcuffs that law cut was indeed made of seestone, but he cut the chains not the cuffs themselvs. i predict that someone will just have the key (like kinemon or bellamy)