Now, that article was written by an academic, not a practitioner (my emphasis): > You can imagine a function as a landscape, where the elevation of the land is

Now, that article was written by an academic, not a practitioner (my emphasis): > You can imagine a function as a landscape, where the elevation of the land is equal to the value of the function (the “profit”) at that particular spot. Gradient descent searches for the function’s local minimum [...]