I don’t think that’s the point it’s making, that the old person has a closed mind. Just that they seem to have ideas and values which seem e.g. morally ancient or something similar, but by the time you reach their age your values and world view will have changed to probably be very similar. I don’t see any values being placed on what they are thinking.
![SMBC [2011-10-28]](https://www.smbc-comics.com/comics/20111028.gif){kind=link}
“The result of having an open mind is having a closed mind, so don’t bother opening your mind at all”
-this comic, apparently
I don’t think that’s the point it’s making, that the old person has a closed mind. Just that they seem to have ideas and values which seem e.g. morally ancient or something similar, but by the time you reach their age your values and world view will have changed to probably be very similar. I don’t see any values being placed on what they are thinking.