<p>If your second major is in the humanities, and you actually enjoy what you’re doing, I don’t think it adds hugely to your workload. It adds a little bit of extra work (in particular, some time in your senior year that normally would have been “free” will probably be occupied by a senior thesis of some sort, or finishing requirements for the second major) and requires a bit more care with scheduling, but that’s about it.</p>
<p>Personally I think it’s a very worthwhile thing to do and I always felt that spending some time studying medieval history (as well as playing music) made me better able to deal with the engineering workload.</p>