The controversy surrounding the ranges in numbers has been a topic for many years. To your point, the 37 number has been quoted as a rebuttal to the 6,500 numbe

The controversy surrounding the ranges in numbers has been a topic for many years. To your point, the 37 number has been quoted as a rebuttal to the 6,500 number, but from my memory, the 37 number has its own set of weak assumptions, and controversy on measurement. I forget what those are, but you’re right- it’s unclear and this article adds to confusion/controversy rather than substantiates the 6,500 figure.