The thing is, there is absolutely nothing within any of the SW films - or the tie-in material, for that matter - which in any way implies that we as an audience are supposed to feel like we could become Jedi Knights. In fact, the tie-in material makes it abundantly clear that not every person in the SW universe * can * in fact become Jedi, something that the Prequel films also make fairly clear.
It is for that very reason that I've never understood or agreed with the backlash that Lucas' introduction of midichlorians generated, nor do I think it in any way contradicts or is at odds with what we learn about the Force in Episodes IV, V, and VI.