You may say the whole idea of character is defined by people holding specific information, which, for various reasons, sometimes perverse, sometimes noble, they are determined not to disclose.
[よこぐるま, yokoguruma] (exp, n) (1) (See 横車を押す) perverseness; obstinacy; something unreasonable (like pushing a cart from the side (instead of from behind)); (n) (2) side wheel throw (judo)