Thoughts about Indiana Jones and the Last Crusade of all things
So you know how at the beginning Indy is lecturing undergrads about how archaeologists look for fact not truth? That foreshadows the rest of the movie; Indy wants to find his father, which is pretty straightforward, but gets caught up in his relationship with the man and a lot of people (his father, the Nazis, Donovan, the Brotherhood) who are about myth as a truth rather than facts.
Thoughts about Indiana Jones and the Last Crusade of all things
Henry Sr as historian and Ilse as Nazi archaeologist are perched at n between. And ultimately at the end the two men have swapped positions; it’s Indy who wants the Grail as something hugely significant and Henry Sr who’s about the factual nature that Indy physically *can’t* get the Grail.