 Thus, according to Relevant Alternatives theorists, you know that you have hands even though you don’t know that you are not a BIV. There are two chief problems for this approach. The first is that denouncing the BIV alternative as irrelevant is ad hoc unless it is supplemented with a principled account of what makes one alternative relevant and another irrelevant. The second is that premise 2 is highly plausible. To deny it is to allow that the following conjunction can be true: