This has to be the most interesting thread I have seen on here! Well....my two cents...I am 70 years old..and like others have said..can no longer do what I used to do. Ah...maybe I can but it would take me a whole lot longer. As for today's people being weaker than back a hundred or so years...heck compared to folks I knew that were adults when I was a kid they couldn't even come close to doing that work as a whole. As for health...well...I firmly believe that today we as humans are not at all the same as they were back then. Yes, we are humans...but not the same as then. Our "make up" has changed. Biologically. Today it seems as if one does not practice what they call good hygiene one will get sick. Imo...a great big pile of bs! What has happened is for the most part people today have nowhere's near the immune power they did back then...even as short a period of time is say 50 years ago. Today, for all purposes most live in some kind of "bubble". Shots for this, pills for that, vitamins for whatever...baloney. I don't and never have gone for all that. Do I wash my hands before eating? Nope. Do I shower every day? You got to be kidding! Do I go to a doctor for a yearly checkup? I haven't set foot in a doc's office for over 16 years and have no intention of doing so. I patch my own self up.
Now for skills and coping with the ultimate reality...called nature. Well, IF one had the time to learn what they did then and HOW they did it...and even more important, WHY they did it a certain way... Yeah, no reason why it couldn't be done. "Time" is the operative word here.
So much of our "knowledge" today comes from books. Kinda odd...I know people today who graduated from highschool...are in their 40's...and cannot add! There are "professionals" that while quite good in their field, outside of that are dumber than a box of rocks. Sad.
Bottom line..IF one were to be transported to a age long gone....the majority if not given a long time period would not make it, imho.
Finally, re today's world and dealing with a calamity of Katrina's kind or worse...one that would take years to get over with... This would not be a pleasant place to live...at all. IF, that were to happen, IMO..you better be ready to kill or you will be killed..no if's and's or but's about it. Your neighbor could well be your worst enemy.