This is exactly right.
We make a supposition, we then ask questions based on that supposition or hypothesis. This is good. But, when the answers come back that evidence/research/documentation either indicates the opposite of this supposition to be true, or, that the supposition has no evidence to support it, we need to be willing to rethink it.
If the research comes back simply that there is nothing to support our supposition,, things get harder. Harder because now we should be getting brutally honest with ourselves, and asking ourselves difficult questions,,, such as, "is my supposition based on modern thinking," and, "is it influenced by how I would do things now?"
We have different cultural mores now compared to then, we have different values when it comes to work and time.
Even today in our modern era, what might be seem a reasonable and logical solution to a problem or question here in the U.S. or in the U.K. might not be in Niger or Sudan or Indochina or even Japan. Some things that seem logical and reasonable here aren't so in the U.K. and visa versa.
To think that what seems like a logical supposition to us must have been the same over 200 years ago,,,,,,, I'll just say it seems a stretch.