Scott Aaronson was suggesting something similar to this but involving Turing machines, in a comment on his blog https://scottaaronson.blog/?p=7134#comment-19477

Scott Aaronson was suggesting something similar to this but involving Turing machines, in a comment on his blog https://scottaaronson.blog/?p=7134#comment-1947705 https://scottaaronson.blog/?p=7134#comment-1947705. I wonder if it would be more successful at emulating a Turing machine than it is at adding 4 digit numbers...