It's Simple Mathematics....

We've all heard the expressions knowledge is power and time is money. Given the basic definition:-

Power = Work / Time

and substituting the aforementioned equivalencies, we get:-

Knowledge = Work / Money

Of course, in the proposition we're trying to find Money so, by simple transformation:-

Money = Work / Knowledge

Therefore, as Knowledge tends to zero, Money increases. With no Knowledge, it doesn't matter how much Work is done for infinite Money!!! But actually, I'm not really having a go at Marketing.... they're pretty smart cookies, which we can prove using a hybrid of the first equations:-

Knowledge = Work / Time

An elegant math demonstration of the fact that the less time they spend working, the more clever they are!

QED [Latin -- quod erat demonstrandum meaning "which was to be demonstrated"]