The plot ignores basic mathematics.

Rating: 9/10 (11 November 2013)

I love this movie, but it ignores the simple concept of compound interest. Bradley Cooper's character quintuples his money every day on the stock market, yet he needs a loan shark to make enough profit? This is silly. Before he found the loan shark, he had $10,000. Had he just continued to quintuple his money every day without borrowing money from the loan shark, his $10,000 would had become 10 million dollars in just six days. On the tenth day, he would have 2.6 billion dollars. On the fifteenth day, he would have 2.6 trillion dollars. On the twentieth day, he would 687 trillion dollars. All this without borrowing money from a loan shark who later tries to murder him.