Would the bachelor's degree major matter if you get a masters in the best field?

[whenhen]

Because all masters degrees are the same… I know the admissions process for my schools masters in geology very well. While some applicants may not have majored in geology, geophysics, or hydrology, it is unheard of for successful applicants to not come from either a geology or related program or an extremely mathematically intense BS undergrad.

By the way, this is what Harvard expects from successful applicants to its graduate economics program

An understanding of economics: At a minimum, we expect some economics courses beyond the principles level. However, the ultimate objective of the Harvard Economics PhD program is to produce successful economic researchers, so demonstrating the ability to do research is an important criterion. This could be accomplished by either having done research previously or via experience as a research assistant. In the latter instance, a letter from the supervisor indicating the ability to do research is critical.

Mathematical preparation: The minimum level of mathematical preparation to be considered includes calculus and linear algebra and demonstration of proficiency with mathematics. Increasingly, successful applicants will have taken more mathematics. In particular, most successful applicants now take real analysis, although that is not a requirement. We do not require a minimum GRE score, however among students admitted in the last few years, scores ranged in the 97th percentile.

You can be the most talented artist in the world, but if you don’t have an extremely firm grasp on basic econ and advanced math concepts, one of the best econ schools in the world does not want you.

The experience of one blogger with a professional terminal masters program should not be the basis on which you base your major.