Yes.  When u are being raised or shuved, etc and u
find u have lost your spidey senses and attention
on plays,  or even if u just need a little help, then....

TIP:  LOOK AT COUNTRY where player is from.

that will give u a general idea as to type of play u can expect
from player...for example if player is from Russia, well, dont forget those
Russians are true gamblers and are willing to gamble all chips
on the unknown-  and the Germans, well they play with
such confidence, u would think they have royal flushes
each hand,   and the list goes on.....

so yes,  country can be important.