Just how old is Ben suppose to be as opposed to Daniel. Now in 1795, Ben was a man, in his mid 40's (according to what Professor Stokes says about him in 1968 after Vicki returns to the present) and Daniel is a boy of about 11 or 12. Now, since 45 years have passed since 1795, that would make Daniel only 57 at the most, yet he is presented as being an old man. 57 is not really an old man. This would make Ben in his mid 80's, which also goes against what Profressor Stokes says about Ben's fate when he first meets Vicki in 1968. He says Ben worked his land and died in his 75 year. I saw this episode recently on DVD and if Ben was in his mid 40's in 1795, he would not have lived to 1840.
In the 1840 story, you are given the impression that Daniel is a much older man than he would have been and that he is going senile. 57 is pretty young, even in those days to be going senile. Also Ben seems better able to get around than Daniel, when it probably should be the other way around.
I like the 1840 storyline but there parts of it that really were not written with any logical thought put into it, with regard to time and events both past and future.
Raholt