I came across a similar question in the forum yet I failed to understand any practical difference between the two coefficients. To me it seems like it's pure semantics when a prediction is a simulation at a future point in time (also I can't seem to grasp to what does the word 'simulation' refer in this context). So for a matrix with N rows and 2 columns is there any difference in the way of calculation between the two? If yes, an example would be very insightful.



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