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First, we can use elementary math.

Consider the movies that followRaiders of the Lost Ark, which was set in 1936.
(Since prequels play by their own rules, these methods will excludeTemple of Doomfrom the calculations.)
According to this method, Indy 5 will actually be set 34 years afterRaiders, marking it firmly in1970.
However, we can go further.
(Thats right: Indiana Jones only ages 82 percent as fast as we do.)
Are you ready to see Indy in Haight-Ashbury?
But who says Indy-time moves in a straight line?
Would a more complex equation not be more appropriate?
Yes, I thought so too.
My quadratic regression model found a new equation for Indy-time:y = .02778x^2 + .02778x.
I consider this a superior equation for three reasons:
1.
ItsRvalue is 1, which means it fits the data set exactly.
And you know what happens when they get unhappy …