"Humans don't always sum two integers correctly. Getting the correct sum is a red herring! There are lots of other problems with my beehive-based calculator [0], but that is not at the top of the list..."

It doesn't matter what we are, what matters is what we want, and whether what we built actually works the way we want it to work.

[0] Discworld's Ponder Stibbons would be rolling in his, grave, or more likely his "Early Death package" pocket-dimension jar.

See my reply to the sibling. Yes, it matters that the outcome is a working system! It doesn't matter whether the system was created by a human pressing keys on a keyboard.