1. Someone of his similiar style
2. Someone that resembles Anand style
3. Person with highest winning percentage against Anand ( if Carlsen, then the 2nd person, obviously)
letsgohome good insight. But, no. Carlsen hides his seconds because he doesn't want to reveal them. Her is what his seconds duty.
1. Accompany him to a bar.
2. Wake him up and talk while walking.
3. Listen to music and dance.
Now, you know why he hides his seconds.
Houdini, Rybka, and Fritz. Who needs seconds when you have chess engines?
Do you talk to them? Do they have emotion?
Maybe and no.