I think Einstein's development of a process to split the beer atom that put bubbles in beer is mankind's greatest achievement.
Actually, while it is difficult to compare the two, Newton's work allowed Einstein's to take place. The development of calculus alone contributes to every engineering project in the world today.
Newton calculator after inventing it
Einstein calculator..
Look at all the stuff on it, DRG to call your homey for some weed, SIN for when you need to do something bad, COS when you need some advice from Cosby, TAN when you come across as too white, and a lot of other stuff you can`t do on Newton calculator