It took someone visually explaining the scenario to me to finally get it although I could not explain it to someone myself. My concern is that the part of my brain that understands numbers does not work the way that others do. My mother and grandmother have been diagnosed with Alzheimer's disease. In all other academic areas I am competent. I know of no association between innumeracy and Alzheimer's.
Many people have difficulty with mathematics.
Personally, I know it can be done, but I would still like to think that I am counted. I think that sampling methods should be used more widely to supplement the actual count. The argument that the Constitution calls for a head count is spurious. The opposition to sampling is primarily political, I suspect. Some Republicans fear that many new Democrats will be found if we supplement the head count with sampling in certain areas.