Do you know what I love the most about this?
Sherlock has said that he only saves important data in his hard drive, in his mind palace.
He is very worried for everything to be perfect for his best friendās wedding. And also heās afraid that things are going to be very different now that Johnās getting married.
He is very detailed with the little things, like the piano starting exactly at 11:43.
So he doesnāt just only learned those tricks with the napkins, but carefully saved it in his mind palace.
This is not an important information or something he is personally interested of, this is for John. So itās important to him now because itās for John.
Somewhere in his mind palace, thereās an special spot for folding napkins that was ābuiltā specially for John. Like a pedestal in Johnās admiration room for something he would never have considered important otherwise.
And that image gives me life every time.