I have invested in property which doubles my money in just 4 to 5 months. If not doubles it gives me at least 20% gauranteed returns. than it depends on the market. And if you know good people in prop biz, than you can get much more returns than expected.
I agree that this is a very stupid suggestion and whatever knowledge you have is nothing but crap... these things are common and known by people who are into investing regularly. i can give you a better suggestion for doubling your money in just 5 years and which simple, not complicating as your shit
