An Impressive Trick

What if I could draw the bridges of New York from memory? Like, I had this one trick where I could memorize that one thing perfectly, and the skills to exhibit it all the time. I bet it wouldn't make much of a difference in the long run. Still, it would be nice to know that your memory was perfect about that one objective thing. It's almost like knowing how to solve the Rubik's cube.

You'd always have that one immoveable unmeasurable thing. No one could take it from you, except if they caused your head trauma, or exposed you to a lot of mercury, or just stood by and let you get dementia eventually.

Still, it would be nice to know an impressive trick like that. Even if only for a little while.