Probability: is a measure of how likely it is that something will happen. Probabilities are really just careful guesses. Probabilities range from 1000 0% most things have a probability somewhere in between. Time: Days, Hours, minutes and seconds all of them were invented by humans as a way to organize their lives. First they noted the difference between daytime and nighttime. The time it takes for the Earth to revolve around the sun is measured in seasons and years. Months are based on the movemnet of the moon around the Earth. A day is when the Earth spins completely around its axis, and days are divided into hours, minutes ans seconds. Many people belive that time goes by at exactly the same speed. Albert Einstien's theory of relativity says that the faster you move, the slower thime is for you.