"I don't think it's empty thought. It asks the fundamental things we need to run our lives: what is good? what is evil? how can we tell if this stuff we experience is real?"
I'm pretty sure the pink notices the Philosophy professors are about to get are real. What is good? What is evil? That is relative to your culture and environment. I don't think anyone argued that Philosophy has no value. It is if you are forced to make tough decisions then I would surely give Philosophy the axe as opposed to Accounting.
"Or the one most important to me: how do we know what we think we know?
That one is important, because it turns out that a lot of the stuff everyone "knows", is just wrong. If you can't see the validity of studying that, just think what you can do in business or the stock market once you divorce yourself from the herd."
Who says? What I know to be true is true to me. It may not be true to you nor your concept of reality. I know of no successful businessmen or stockbrokers that majored in Philosophy. I don't any that majored in the Humanities period.
"In fact, a lot of shrewd businessmen do just that: they don't assume that what everyone else 'knows' is true. So they look for themselves, think for themselves, decide for themselves."
I could see where thinking outside of the box would be helpful at times in business. You are mistaken if you don't think there are proven business models and formulas that work and someone looking for a future in business would be better served majoring in business are a related field.
"Then they buy into trends before everyone else, and bail out of bubbles before they burst... and make a killing."
So are trying to say that if you want to be the next Donald Trump you should major in Philosophy??? I would argue skills gained from a background in business and the real world ( you know the place were you eat, sleep, work,feel pain and pleasure) would go much farther than any of the Philosophical abstract concepts I learned in class. What would you suggest they cut?