The second theory—possibly an urban myth—is that concerned parents in several states proposed bans on metal lunch boxes, claiming kids were using them as "weapons" to hit one another.

第二种理论——很可能是一个荒诞的都市说法——几个州担忧的父母提议禁止使用金属午餐盒，声称孩子们会把它们当作“武器“来互相攻击。

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One contentious theory, carried by some Russian and German media, is that the submarine was hit by a missile fired in error by a Russian warship during exercises.

BBC: Kursk investigators examine sub

One possibility is that the amyloid theory is right, but that the Eli Lilly drug is flawed and did not hit the proper molecular target, and ended up merely causing toxicity.

FORBES: Eli Lilly Alzheimer's Disease Failure Bolsters Amyloid Theory Skeptics