<p>The most impractical undergraduate major is the one you select only because of job prospects. If you think the job market favors that major, then it’s probably too late. By the time you have that credential, a bunch of others will have the same credential. Call me an idealist, but figure out what you are truly interested in devoting time and energy to, and what matches with your aptitude, and pursue it. This applies whether you are interested in math or masonry. No guarantees, but selecting your college major primarily by attempting to predict the future job market is a recipe for regret and bitterness.</p>