Please help if you can. Graduate admission. Different major.

[simplybetter]

  Hello, everybody. I am very new to this forum. Now, I am an International sophomore in Korea. We have to choose our majors, and this decision is very hard to make. Now, I have Physics as my major and Computer Science as minor. In few days, I have to come up with the decision and I was going to change my major and minor(Computer Science as major and Mathematic as minor). I am trying to change my major to Computer Science because I believe it will be safer and gives more freedom to earn money, and it is important because I need to help my family(btw, first generation college student from very low-income family). I don't want to risk and I believe with good grades I can have the good opportunity to live well. (No major in Computer Science)

  Here's the thing. Don't laugh pls.   I am very ambitious and always have been. I want to devote my life into the many sciences. Many of you can probably recognize want to understand the mathematics, nature(physics), want to help prolong life and study biological sciences. I am thinking of taking prerequisites for Med School, and take Math as my minor and Computer Science as my major. Let's say I can have 2 years of experience in researches(1 year Math, 1 year Physics(for myself)). Let's also assume I will have very good scores in GRE Subject test, TOEFL and in General GRE. Can I then be considered as a good candidate for top schools in the US for Physics or I have no chance if my major and minor are not really related to Physics? Only test scores with different major and self-study of Physics(How can I prove it, though?)

 I know some of you could say focus on something, and I agree that it would be much easier if I had only passion. However, I want to give a shot, and try devoting my youth to studying. May be, who knows, this worth to do once in life? The reason I am choosing Math is that I think there are many examples that after being a mathematician, people tend to contribute a lot to physics too. However, not so many examples the other way around.

Also, I would like to know how it is hard (1)to get accepted for two PhDs and (2) if you're accepted to study that. I can put my energy if I am allowed to study two PHDs simultaneously. I would love to get accepted for two programs in Ph.D.(One, in this case, will certainly be Biology. I want my parents live very long ). I really think, at least for now, that intellectual prosperity is the most important thing. For Biology PHD I will have only MCAT(let's assume very good scores), GRE and TOEFL, prequisites.

Projected GPA: 3.75(converted to 4. In fact, we have 4.3 as maximum)

Projected number of credits:153

Projected length of my undergraduate study:3.5-4 years

Please, share your opinions. Detail answers would be very welcomed. I would love to read each of them Thank you a lot, and I hope you'll have a nice day!

[GeoDUDE!]

The fact that you want to do two phds shows how you don't really understand the nature of a PhD: Doing a PhD in any of the natural sciences should give you the tools (but maybe not the knowledge) to publish in any of the sciences. IE, two PhDs is redundant and probably not productive.