John Killian's article, "A Tale of Two Theories," in the winter 2019 issue spurred me to write. The electron flow theory may sound appealing on the surface, but it opens up a huge Pandora's box and it misses two very important facts. The first is that electrons have negative charge. So when they are going south, the charge (thus the current) is going north. The other is that electrons are only one of many kinds of charged particles that carry current, some negative, some positive. While electrons are the predominant kind in metallic conductors, there are many other cases where positive carriers are moving north, or particles of both polarities are moving, either in the same direction (thus partially canceling each other) or opposite (thus adding to each other's current). Batteries, plating tanks, plasma cutters, arc welders, and semiconductors are examples.
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机译：约翰·基利安（John Killian）在2019年冬季发行的文章《两种理论的故事》（A Tale of Two Theory）促使我写作。从表面上看，电子流理论可能听起来很吸引人，但它打开了一个巨大的潘多拉盒子，忽略了两个非常重要的事实。第一个是电子带负电荷。所以当它们向南移动时，电荷（因此电流）会向北移动。另一个是电子只是携带电流的许多带电粒子中的一种，有些是负的，有些是正的。虽然电子在金属导体中占主导地位，但在许多其他情况下，正载流子向北移动，或者两种极性的粒子都朝着相同的方向移动（从而部分相互抵消），或者相反的方向移动（从而增加彼此的电流）。例如电池、电镀槽、等离子切割机、电弧焊机和半导体。
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