You are focusing on an example and conflating it with the actual point that I'm making, which is that electron is not only slow, but compounded by slow programm

You are focusing on an example and conflating it with the actual point that I'm making, which is that electron is not only slow, but compounded by slow programming in top. That being said... I know exactly what you are talking about and it was always strange to me, because it was actually iterating through every time to find a value first, so the iteration through the linked list would always kill the performance. Even so, basic linked lists are practically obsolete. This is not a good example of algorithmic complexity, because the complexities were actually the same.