2 plus 2 equals 4, but does not "see" value or context or
2 fake diamonds + 2 fake diamonds =4,. 2 real diamonds + 2 real diamonds = 4, but with very different values attached. Even with a differential of all real diamonds, rote math does not tell us which of of the diamonds are better quality, or which might be stolen, or if ability to finance or how much supply and demand for diamonds influenced prices.
Math is number driven not value driven, even when it supposedly represents value. That is its weakness. All these decades of experts trying to tweak math to include value elements for software programs and they come up short. CMA, AVM, Zillow Zestimates, Core Logic RPR, etc none of them can make math properly factor in the disparate value elements and financing/market influences always changing and affecting real estate markets. Perhaps in other fields math driven results are highly applicable but the RE market is not like other fields.
The day when majority of buyers walk into a RE office and announce they want to buy a certain property because it is a "data point", and majority of sellers agree to prices because they are a "data point", is the day when data driven programs will be able to better analyze RE markets.