I come to a bridge. I believe the bridge is safe. But I will not know that the bridge is safe until I cross it. I cross the bridge and it does not collapse. I know know that the bridge WAS safe. The next time I come to that bridge, based on past experience, I will believe that the bridge is safe; but I will not know for sure the bridge is safe until I cross it. Each time I cross that bridge my belief that it is safe is more certain; but I can never know with complete certainty that the bridge is safe. I can only know that the bridge WAS safe in the past.
this kind of remind of scenes in movies like western movies or army movies, even sometimes like ' lord of the rings '. in the movie, our heroes or a group of people, even ' Indiana jones ' scene. the scene when they have across long ragged somewhat safe mile-long bridge that across the gorge. of below the bridge in the gorge run deep current river below. ( of course, every scene, you know that scene. they throw a pig across the gorge, you know they think the pig can fly over the gorge, but the pig fall to it's death. are you try to tell me, that I am only person on this forum seen these scenes in movies? I guess, I am!
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anyway, most of time, the group will sent one person at the time over the ragged bridge. of course, halfway, one group's leg caught a broken wooden panel of the bridge, he or she get out of the hole. the hero of the movie had to go and rescue him or her. then everybody follow the hero is last to get off the bridge, of course, the villain will try to fight the hero on the bridge. ( or the damn flying pig come out of the gorge, and knock off one of the people across the face, that person fall over the bridge to his or her death. I wish you all see the pig in action, it is a cool scene. that pig really smack the crap of the person's face.
) you know in these scene - you know nobody ever run across the bridge at this time. I think you would better change to survive. that faith! fate is get across the bridge or you fall into the gorge. why you seen the scenes in the movies, it take over 20 minutes in the movies? you know worst in the scene, when try to get a tank, car , or horses attract to a wagon. you know those scenes in western movies. you that movie want to believe it is dangerous. the people have faith the leader or their selves to get across the bridge.
I think most people who believe that if you come across a bridge, and you never across the bridge, of course, you going to hesitate to embark to challenge the bridge. if you travel a lot over the bridge, you will be afraid to go cross. it that how look at challenge, you have try first. you have to believe in yourself.
moral of the post - if you walk across a bridge, and see a flying pig come toward you. duck!!