Dear Mark: Is it better to play on a machine that offers a high hit frequency or one with a higher payback percentage? Or, am I to assume that slot machines that have a high hit frequency by design ...

The days of you trying to make a buck actively trading in the stock market are over. Individuals don’t stand a chance anymore because they are largely competing against rational machines often guided ...

Low-frequency resonance is a bigger problem than high-frequency resonance in general industrial machines. This little-recognized distinction is crucial in determining the best way to correct it.