For example, if he has someone in charge of spending money on medical research, don't you think there is a point (a few billion) where they just don't know what else to spend money on? I mean, there are only so many medical researchers in the whole world.
Of course you can always just throw money away/at people, but it won't do any good. "Give a man a fish" vs. "teach a man to fish."
Only about 16% of proposed NIH grants alone are funded each year- we can immediately see from that data that funding all NIH grants in just one year would probably take well over $100 billion.
The life scientists of the U.S. could find a use for Bill Gate's entire fortune in a few years. Not that dropping $80 billion on across the board medical research wouldn't be incredibly, enormously beneficial, but the infrastructure and manpower in the medical sciences are there to be able to absorb it and put it to use.
I've done grant funding as well. People say they want money, but the minute you give them a deadline, they're gone, and they can't collect even the merest evidence required for due diligence.
That is about twice as much as NASA [2].
[1] http://www.nih.gov/about/budget.htm
[2] http://en.wikipedia.org/wiki/Budget_of_NASA#Annual_budget.2C...
Edit: well, of course everyone's salaries would go up since there would be so much more demand and no extra supply, but I doubt they could go up that much all at once; most of the money would still go unspent.
Yes, throwing fish at the poorest is the right thing to do. Malnourished children grow with diminished intellectual capacity. Then it is too late to teach them to fish.
Look at the recent US drought - were people wrong to have had children ten years ago? How were they to know that some areas of the US were going to be in severe multi-year drought?
Why is it different if you change "the US" to some other part of the world?
Have a read of "Too Poor To Farm" which explains some of the problems very poor people face, and explains some of the reasons why very poor people have children.
http://www.irinnews.org/report/94947/lesotho-weather-extreme...
That's hardly surprising. Managing money is investing, and wise investment requires a lot of skills, market information, and connections. There's only so many good investors out there.
Not investing as a whole is a zero sum game but specifically increased levels of investing sophistication and savvy.