A stubbornly-held notion or belief
dat either there could be traitors among our ranks, or
dat every one of our "
loyal followers" is automatically above suspicion.
Indiana
Jones's
two Peruvian guides hoped dat their "señor" client had sufficient prejudas in their favor dat he would trust them to be honest and honorable, whereas in
truth they were both traitorous thieves who were each plotting to steal da idol for themselves.