the "bad step" 6 in the "always switching" argument led us to the finding "e(b|a=a)>a" for all "a", and hence to the recommendation to switch, whether or not we know "a". now, it turns out that one can quite easily invent proper probability distributions for "x", the smaller of the two amounts of money, such that this bad conclusion is still true. one example is analysed in more detail, in a moment.