I had to go through a Babylonian secant table and find the error as an exercise. The actual point of the exercise was in determining how the error in calcuation

I had to go through a Babylonian secant table and find the error as an exercise. The actual point of the exercise was in determining how the error in calcuation was made. Figuring out how science was done is still science, even if all you're doing is figuring out how to do the exact same thing but in a different way.