On Mon, 22 Mar 2021 03:19:07 -0700, Leo >
wrote:

>On 2021 Mar 21, , Graham wrote
>(in article >):
>
>> I saw that movie when it first came out. I still regret spending that
>> admission money. What a lousy, over-rated film!
>
>Yet, if you hadn´t seen the movie, you would have missed at least a
>thousand references to HAL throughout your life. It was money well spent.

Clarke published a book afterwards, so HAL could have been known from
that, or from any of a gazillion parodies over the years.

Same with most of the other movie quotes you indicated. These things
burrow into pop culture and often stand on their own to folks who have
no idea of their origins.