What that means is that they were brainwashed during the first years on the planet and that they ignore any logical argument against what they believe. It's not rocket science.....it's kept mythology and hearsay alive for several thousand years. One generation brainwashes the next. Stories about miracles, virgin birth, resurrection were only witnessed by a very few individuals when studied as a historical fact. There were six recognized historians alive during the "Jesus Ministry." Not a one of them documented the first miracle.......just his close friends and good buddies.