[nosse]

I've been repairing bridges. And I've studied them to some extent.

The magical tendency of nature such that nothing man built will lats forever. Every bridge will collapse, every dam will fall, every house, windmill and electric line. Heck we can't even slope ground so that it would not fall down someday (it just might take few million years).

Men make errors all the time. Sometimes dudes don't care about rusty bearings under a bridge, the some truckers don't care about maximum weight limitations. The bridge designer was in hurry and they had to cut some steel from the bridge to fit the concrete sprouting nozzle in between. And Voila.

If you treat all risks equal, you avoid driving and favor nuclear energy.

PS. Safe driving to your all.