I think it means that for just a time the reader (or whatever) needs to ignore all logical questions and just believe.

It means the mind and consciousness are complex animals! In my own self-study, the whole notion of manipulating beliefs has received a lot of attention -- why we do it, does it work, etc. My general conclusions is that it doesn't really work: you can sort of "fake it", but only by producing a kind of psychological dissociation, much like a child hiding under the bed from the boogeyman in the closet. Mentally we can create a sort of "cocoon" around a certain set of ideas, and climb in with them and wrap ourselves up, pretending that we really believe (or don't believe, whatever the agenda is). But when we do that, our own mind becomes "the enemy"... i.e. we become afraid of and hostile to those parts of ourself which do NOT believe. And we become to some degree psychological cripples -- cut off from our gestalt of understanding how things are. This happens in religion a lot -- people are told that they must believe in something in order to be saved, or in order to be good, etc. So they try, and they try sincerely. This is the "cocooning" operation in progress: pretending or explaining away or minimizing the doubts that naturally accompany any attempt to believe something which isn't obviously true. One can stay in the cocoon for years with determination and constant reinforcement, but cognitive and spiritual development are arrested in such a state. Ultimately, life is calling for us all to GROW and change, not hide out in a tube of insulating artificial mental goo... and sometimes that call for growth gets through the layers of insulation, the doubts come flooding in, and the game is over quickly. So "willing suspension of disbelief" is in the same category as "willing attempt to believe" -- an inauthentic struggle with one's own natural cognitive processes -- attempting to force an election which happens without conscious control: the election by which our minds integrate their experience to produce a model of reality. It's not healthy.

Willing suspension of disbelief is what you do whenever you take what you know to be fiction as if it were real, eve for a little time. If you go and watch, say, a James Bond film, you know that it is not real. The world isn't like that, human beings cannot shoot as straight, fight as hard, and seduce as often as JB does. But if you started criticising every time the film did something unrealistic, you wouldn't enjoy the it. So you willingly suspend your disbelief that a man can climb along the wing of a flying plane, that evil geniuses can build island hideouts with nobody noticing, that JB can shoot a flea off an elephant's ear. The same applies for a vast amount of entertainment - fantasy novels, stage magicians and so on. Y0u deliberately suspend your analytical mind for the duration of the performance - and turn it on again when the performance is over.