Changes

At age 19, Pascal invented the first calculating machine.  At age 23, Pascal proved the existence of the [[vacuum]], which made possible barometers, hydraulic devices and hypodermic syringes.   

At age 19, Pascal invented the first calculating machine.  At age 23, Pascal proved the existence of the [[vacuum]], which made possible barometers, hydraulic devices and hypodermic syringes.   

Pascal is credited with developing the mathematical [[theory of probability]].  He also contributed to [[calculus]].

Pascal is credited with developing the mathematical [[Probability|theory of probability]], and he discovered the significance of what is now known as [[Pascal's triangle]].  He also contributed to [[calculus]].

At age 31, Pascal developed a deep relationship with [[Christ]].  To help others know Christ, Pascal proposed a "wager" ([[Pascal's wager]]):   

At age 31, Pascal developed a deep relationship with [[Christ]].  To help others know Christ, Pascal proposed a "wager" ([[Pascal's wager]]):