Also, does it have any automation risk?

Probably, but I don't know much about it.

~

Why double major instead of doing a bachelor's and then a master's in a different subject? How feasible would it be to get a bachelor's degree in 3 years and a master's degree in 1 year instead of double majoring in 4 years?

This is just an artifact of the school I chose to attend (Denison University, a liberal arts college) where double majors are relatively easy and graduating in 3 years is impossible.