are what i dont understand, does it mean that the "brain wallet fools" sites, do wrong calculation ??
Does it mean, its better to use a, lets say, python script to calculate ??
It's not the way that the calculation is being done but rather he fact that you are just taking the SHA256 hash of
any string instead of a proper random 256-bit private key makes it far easier to crack with tools such as
brainflayer since the problem has been reduced from 256-bit brute force to (dictionary) ASCII password string brute force.