Some multihorned dilemmas in the magnetic field

Engineers do not like problems in units and dimensions if the discussion of them is likely to upset the concepts they learned in school. They usually shrug off such matters as ??metaphysical.?? Unfortunately, there are enough theoretically minded scientists and engineers who insist on thinking and talking about such things to produce a continuing situation well represented by an old proverb: Quot capita, tot sententiae (From many heads, many opinions).