Lamented_Soul said:
You didn't think I meant majoring in Astrophysics and QM literally, did you?
Well, that's what you said - more than once. I don't see why I should make assumptions about what you're asking. I would try not to be so arrogant in your tone: you are the student here, remember and you're the one asking for advice. I am not obligated to share my experience and expertise with you.
Lamented_Soul said:
But, Astrophysics (So far as I know) mainly deals with GR. And GR & QM are at odds. Hence the main need for M Theory to work.
This is too much of a popular science look at things. The 'conflict' doesn't come up as much as you might think - though there are quite a few areas where it would certainly be helpful to have a 'theory of everything' the science and data are so complicated that it isn't always the limiting factor.
Lamented_Soul said:
So, I didn't know if it would be an... "Intelligent" decision to dabble in both ends of the physics spectrum, simultaneously considering GR and QM disagree so strongly (In certain situations).
If you can take both classes, go for it. GR was one of the best classes I ever took, I loved it.
Lamented_Soul said:
QM is a field. Old or not, it's still considered a field of science.
It's a theory. It's as much of a field as 'F=ma' is. In the way I had mentioned 'not a field' in my previous post I was more referring to the fact that QM doesn't exist as a research entity any more.
Lamented_Soul said:
I meant double major in Astronomy and Physics with the sub-divisions of Astrophysics and Quantum Mechanics.
At undergraduate, you don't have to worry about anything like this - nor will you get the chance to. Just take whatever courses interest you and, as I like to advise, take plenty of math courses. If, at the end of your degree, you turn out to be interested in something like string theory, then you will have the option (well, as much as anyone else does - these fields are very small just now, and there's no sign of any productive output on the horizon). For the most part, the undergrad curriculum is spelled out - you will need to cover mechanics, electromagnetism, solid state, optics, thermodynamics, etc etc. No good undergrad program will have any sort of specialisation. 'physics' is specialised enough a topic at this stage.
Finally, in undergraduate degrees, QM features regularly - every curriculum will have some QM component. The same can't be said for GR - it's mainly a graduate level course, for a few different reasons. You won't miss out if you don't manage to take GR at undergraduate - you'll always have the option later. This is why I recommend keeping your math as solid as possible - it will always make the physics easier.