Hi, Pixel. Bob started this thread with a stated purpose. I've really enjoyed his videos.
Actually, I don't need to go back in time to learn things from the past, from the people of the past. I think my posts have shown, and I do it every day, that I have plenty of their own primary sources I read, and I read a lot of the works of scholars who study those sources for their interpretations and to learn from them.
People of all ages and times (look at Herodotus, who despite his shortcomings as a historian long ago, also provided the people of his time the history of times past) have learned from their own pasts. I expect any day now to receive the four volume set of Theodor Mommsen's History of Rome from a professor of Classics at a major university who wanted to sell his 1887 editions of this nineteenth century historian of Rome.
He assured me that the books have that wonderful musty smell that transports you better than any thought exercise or actual time machine to the past. People have always been able to learn from the past: it's there for you to reach out and grab, and it's a journey that, yes, I learn far more from than I could ever teach, and you don't need a time machine.
A great post, actually, Pixel, that made me think that I should have appended that thought that I learn far more from people of the past than I could ever teach them. But time machines don't exist, though I can nevertheless peer back through time through books. Thought provoking, indeed, your post, and it actually illuminates Bob's point in starting the thread. There is indeed knowledge in the past. Thanks, Pixel. Kim