One way to see Asimov's "infinity of wrongness" is perhaps as a fractal. You could view the bulbs in the mandelbrot as being a kind of knowledge, and the "main bulb" occupying the majority of the area belonging to the set as the set of truths known about our universe. The mandelbrot set is infinite in complexity, however its area is finite and bounded!
Or as ironing out the wrinkles on a great big t-shirt, where each wrinkle is sub-wrinkled with smaller wrinkles and so on. We've "ironed out" the biggest wrinkles, there are infinitely more but they are much smaller. We're perhaps over half-way ironed, in a quantitative sense.
I disagree fundamentally. You may as well ask me to imagine Earth as a disc, with multiple rotating spotlights shining down on it and a giant ice wall around the edges. I understand what the image is trying to convey, I simply do not agree that this is the shape of the thing I experience.
Or as ironing out the wrinkles on a great big t-shirt, where each wrinkle is sub-wrinkled with smaller wrinkles and so on. We've "ironed out" the biggest wrinkles, there are infinitely more but they are much smaller. We're perhaps over half-way ironed, in a quantitative sense.